All told, I've written 173 books, including some that weren't published (but contracted and paid for) and various derivatives and multiple editions. When counted uniquely, the title list is shorter. I calculate only 66 unique titles, as presented here.

This list shows what I consider to be my fully unique titles. Second and additional editions are counted for each original title, as well as derivative works. Even if a second or third edition contains over 80 percent new material (which is typical for my work), I consider it a derivative to the original.

Edition numbers are sequential and may not match up with the book's title or edition number, which the publisher uses. Often published editions skip numbers or use a different scheme.

1. Hard Disk Management with MS-DOS and PC-DOS (Title 1)

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1st Edition, 1987
2nd Ed., 1990, Hard Disk Management with DOS, 2nd Edition
3rd Ed., 1992, Hard Disk Management with DOS 5, 3rd Edition
4th Ed., 1993, Hard Disk Aerobics; Shaping Up Your PC, 4th Edition

2. How to Understand and Buy Computers (Title 2)

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1st Edition, 1987
2nd Ed., 1988, How to Understand and Buy Computers, 2nd Edition
3rd Ed., 1989, How to Understand and Buy Computers, 3rd Edition

3. Mastering the Apple IIGS Toolbox (Title 3)

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1st Edition, 1987
2nd Ed., 1988, Advanced Programming Techniques for the Apple IIGS Toolbox

4. Compute's Problem Solving with Sidekick Plus (Title 7)

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Only Edition, 1989

5. Advanced MS-DOS Batch File Programming (Title 8)

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1st Edition, 1989
2nd Ed., 1991, Advanced MS-DOS Batch File Programming, 2nd Edition
3rd Ed., 1991, Advanced Batch File Programming, 3rd Edition
4th Ed., 1993, Outrageous DR DOS Batch File Programming
5th Ed., 1993, Batch Files and Beyond; Your Path to PC Power

6. The Complete Supercard Handbook (Title 9)

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Only Edition, 1989

7. Hard Disk Management (Title 11)

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Only Edition, 1990

8. DOS Secrets (Title 12)

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Only Edition, 1990

9. Staying with DOS (Title 13)

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Only Edition, 1990

10. Working With Magellan (Title 14)

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Only Edition, 1990

11. The ABC's of Upgrading Your PC (Title 15)

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1st Edition, 1990
2nd Ed., 1993, The PC Upgrade Guide for Everybody

12. Beginner's Guide to DOS (Title 16)

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Only Edition, 1991

13. DOS 5 User's Guide (Title 17)

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Only Edition, 1991

14. The Microsoft Guide to Managing Memory with MS-DOS 5 (Title 19)

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1st Edition, 1991
2nd Ed., 1993, The Microsoft Guide to Managing Memory with MS-DOS 6

15. Enhanced MS-DOS Batch File Programming (Title 20)

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1st Edition, 1991
2nd Ed., 1992, Enanced Batch File Programming, 2nd Edition

16. DOS for Dummies (Title 22)

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1st Edition, 1991
2nd Ed., 1993, DOS For Dummies, 2nd Edition
3rd Ed., 1993, Microsoft MS-DOS 6.22 Upgrade for Dummies
4th Ed., 1996, DOS for Dummies, Windows 95 Edition
5th Ed., 1998, DOS For Dummies, 3rd Edition

17. More DOS Secrects (Title 23)

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Only Edition, 1992

18. Supercharging MS-DOS, 3rd Edition (Title 24)

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Only Edition, 1992

19. The Concise PC Notebook and Laptop User's Guide (Title 26)

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Only Edition, 1992

20. Dan Gookin's PC Hotline (Title 28)

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Only Edition, 1992

21. Stacker An Illustrated Tutorial (Title 29)

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1st Edition, 1992
2nd Ed., 1993, Stacker An Illustrated Tutorial, 2nd Edition
3rd Ed., 1994, Doublespace An Illustrated Tutorial

22. PCs for Dummies (Title 30)

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1st Edition, 1992
2nd Ed., 1994, PCs for Dummies, 2nd Edition
3rd Ed., 1995, PCs for Dummies, 3rd Edition
4th Ed., 1996, PCs for Dummies, 4th Edition
5th Ed., 1997, PCs for Dummies, 5th Edition
6th Ed., 1998, PCs For Dummies, 6th Edition
7th Ed., 1999, PCs For Dummies, 7th Edition
8th Ed., 2001, PCs All-In-One Desk Reference For Dummies
9th Ed., 2001, PCs For Dummies, 8th Edition
10th Ed., 2003, PCs For Dummies, 9th Edition
11th Ed., 2005, PCs For Dummies, 10th Edition
12th Ed., 2007, PCs For Dummies, 11th Edition
13th Ed., 2009, PCs For Dummies, Windows 7 Edition, 12th Edition
14th Ed., 2013, PCs For Dummies, 12th Edition
15th Ed., 2016, PCS For Dummies, 13th Edition

23. WordPerfect for Dummies (Title 31)

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1st Edition, 1992
2nd Ed., 1993, WordPerfect 6 For Dummies

24. Dan Gookin's Guide to Undergrond DOS 6.0 (Title 40)

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Only Edition, 1993

25. Microsoft Guide to Optimizing Windows (Title 41)

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Only Edition, 1993

26. Word For Windows For Dummies (Title 43)

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1st Edition, 1993
2nd Ed., 1994, Word for Windows 6 For Dummies
3rd Ed., 1994, Word 6 for Macs For Dummies
4th Ed., 1995, Word for Windows 95 For Dummies
5th Ed., 1996, Word 97 For Windows For Dummies
6th Ed., 1998, Word 98 For Macs For Dummies
7th Ed., 1999, Word 2000 for Windows For Dummies
8th Ed., 2001, Word 2002 For Dummies
9th Ed., 2003, Word 2003 For Dummies
10th Ed., 2006, Word 2007 For Dummies
11th Ed., 2010, Word 2010 For Dummies
12th Ed., 2013, Word 2013 For Dummies
13th Ed., 2013, Word 2013 For Dummies, Pocket Edition
14th Ed., 2015, Word 2016 For Dummies
15th Ed., 2018, Word 2019 For Dummies
16th Ed., 2021, Microsoft Word For Dummies

27. MS-DOS to the Max (Title 44)

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Only Edition, 1993

28. Illustrated Computer Dictionary For Dummies (Title 45)

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1st Edition, 1993
2nd Ed., 1995, Illustrated Computer Dictionary For Dummies, 2nd Edition
3rd Ed., 1998, Illustrated Computer Dictionary for Dummies, 3rd Edition
4th Ed., 2000, Illustrated Computer Dictionary for Dummies, 4th Edition

29. More Wordperfect 6 For DOS For Dummies (Title 48)

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Only Edition, 1994

30. More DOS for Dummies (Title 49)

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Only Edition, 1994

31. C For Dummies, Vol I (Title 53)

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1st Edition, 1994
2nd Ed., 1997, C For Dummies, Vol. II
3rd Ed., 2004, C For Dummies, 2nd Edition
4th Ed., 2004, C All-In-One Desktop Reference For Dummies

32. Real Life Windows 95 (Title 56)

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Only Edition, 1995

33. Buy That Computer! 1995 Edition (Title 57)

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1st Edition, 1995
2nd Ed., 1996, Computer Buying Tips for Dummies
3rd Ed., 1998, Buying a Computer For Dummies
4th Ed., 2000, Buying a Computer For Dummies, 2nd Edition
5th Ed., 2003, Buying a Computer for Dummies, 2004 Edition
6th Ed., 2004, Buying a Computer for Dummies, 2005 Edition
7th Ed., 2005, Buying a Computer For Dummies, 2006 Edition

34. Parenting For Dummies (Title 60)

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1st Edition, 1995
2nd Ed., 2002, Parenting For Dummies, 2nd Edition

35. Discover Windows 95 (Title 65)

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Only Edition, 1997

36. Dan Gookin's Web Wambooli (Title 67)

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Only Edition, 1997

37. Dan Gookin Teaches Windows 98 (Title 69)

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1st Edition, 1998
2nd Ed., 2001, Dan Gookin Teaches Windows Me

38. How to Use Microsoft Excel 2000 (Title 75)

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Only Edition, 1999

39. Digital Scanning and Photography (Title 78)

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Only Edition, 2000

40. PCs For Dummies Quick Reference (Title 80)

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1st Edition, 2000
2nd Ed., 2003, PCs For Dummies Quick Reference, 2nd Edition
3rd Ed., 2005, PCs For Dummies Quick Reference, 3rd Edition
4th Ed., 2007, PCs For Dummies Quick Reference, 4th Edition

41. SAMS Teach Yourself Microsoft Windows 2000 Pro in 24 Hours (Title 81)

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Only Edition, 2000

42. Dan Gookin's Naked Windows XP (Title 87)

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Only Edition, 2002

43. Troubleshooting Your PC For Dummies (Title 88)

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1st Edition, 2002
2nd Ed., 2005, Troubleshooting Your PC For Dummies, 2nd Edition
3rd Ed., 2008, Troubleshooting Your PC for Dummies, 3rd Edition

44. I Didn't Know You Could Do That Windows XP Home Edition (Title 90)

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Only Edition, 2002

45. Dan Gookin's Naked Office (Title 91)

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1st Edition, 2003
2nd Ed., 2004, Power Excel & Word

46. Weekly Wambooli Salad, Vol. II (Title 100)

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Only Edition, 2004

47. Laptops for Dummies (Title 101)

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1st Edition, 2004
2nd Ed., 2006, Laptops for Dummies, 2nd Edition
3rd Ed., 2008, Laptops For Dummies, 3rd Edition
4th Ed., 2010, Laptops For Dummies, 4th Edition
5th Ed., 2012, Laptops For Dummies, 5th Edition
6th Ed., 2015, Laptops For Dummies, 6th Edition
7th Ed., 2021, Laptops For Dummies, 7th Edition

48. eBay Photos That Sell (Title 102)

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Only Edition, 2005

49. Weekly Wambooli Salad, Vol. III (Title 105)

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Only Edition, 2005

50. Programmer's Guide to nCurses (Title 110)

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Only Edition, 2007

51. Find Gold in Windows Vista (Title 112)

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Only Edition, 2007

52. Troubleshooting All-In-One Desktop Reference For Dummies (Title 116)

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1st Edition, 2009
2nd Ed., 2011, Troubleshooting & Maintaining Your PC All-In-One For Dummies
3rd Ed., 2017, Troubleshooting & Maintaining Your PC All-in-one For Dummies
4th Ed., 2021, Troubleshooting & Maintaining PCs All-In-One For Dummies

53. Nexus One For Dummies (Title 120)

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1st Edition, 2010
2nd Ed., 2010, Droid X For Dummies
3rd Ed., 2010, Droid 2 For Dummies
4th Ed., 2011, HTC ThunderBolt For Dummies
5th Ed., 2011, Motorola Atrix For Dummies
6th Ed., 2011, Droid X2 For Dummies
7th Ed., 2011, Droid 3 For Dummies
8th Ed., 2011, Droid Bionic For Dummies
9th Ed., 2012, Droid 4 For Dummies
10th Ed., 2014, Samsung Galaxy Note 3 For Dummies
11th Ed., 2015, Amazon Fire Phone For Dummies

54. Samsung Galaxy Tab For Dummies (Title 123)

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1st Edition, 2011
2nd Ed., 2012, Samsung Galaxy Tab 10.1 For Dummies
3rd Ed., 2012, Samsung Galaxy Note For Dummies
4th Ed., 2013, Samsung Galaxy Tabs For Dummies
5th Ed., 2014, Samsung Galaxy Tabs For Dummies
6th Ed., 2015, Samsung Galaxy Tab S For Dummies
7th Ed., 2019, Samsung Galaxy Tabs For Dummies

55. Android Phones For Dummies (Title 131)

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1st Edition, 2012
2nd Ed., 2014, Android Phones For Dummies, 2nd Edition
3rd Ed., 2015, Android Phones For Dummies, 3rd Edition
4th Ed., 2016, Android Phones For Dummies, 4th Edition
5th Ed., 2018, Android Phones & Tablets For Dummies
6th Ed., 2020, Android For Dummies

56. Nexus 7 For Dummies (Title 134)

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1st Edition, 2012
2nd Ed., 2014, Nexus Tablets For Dummies

57. Windows 8 Sucks (Title 136)

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Only Edition, 2012

58. Android Tablets For Dummies (Title 141)

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1st Edition, 2013
2nd Ed., 2014, Android Tablets For Dummies, 2nd Edition
3rd Ed., 2015, Android Tablets For Dummies, 3rd Edition
4th Ed., 2016, Android Tablets For Dummies, 4th Edition

59. Beginning Programming with C For Dummies (Title 142)

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1st Edition, 2014
2nd Ed., 2020, C Programming For Dummies

60. Dan Gookin's Nexus 9 Tablet A to Z (Title 149)

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1st Edition, 2015
2nd Ed., 2015, Dan Gookin's Nexus 7 Tablet A to Z

61. Dan Gookin's Android Apps A to Z (Title 151)

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Only Edition, 2015

62. Microsoft Word 2016 for Professionals For Dummies (Title 158)

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Only Edition, 2016

63. Dan Gookin's Guide to Ncurses Programming (Title 162)

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Only Edition, 2017

64. Dan Gookin's Guide to Programming XML and JSON (Title 166)

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Only Edition, 2019

65. Running For Local Office For Dummies (Title 167)

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Only Edition, 2019

66. Dan Gookins Guide to Programming Curl (Title 168)

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Only Edition, 2019