Welcome to the Linux Troubleshooting Page! Many of these how tos used to be part of jrhenkelmann.net and maybe you just got forwarded from there. They are now merged into How To Everything! a new project with a far broader range of topics. Hopefully you'll find the solution your were looking for here to have even more fun with your Linux system!
The Howtos are Debian, Ubuntu and Linux Mint specific Ubuntu is based on Debian and Linux Mint is based on either Ubuntu or Debian. Most of the things described here should work on any Debian based system. Though it is possible that some of them might tackle an issue specific to one of these distributions or might only be that easy to fix on one of them. You'll always read in the intruduction which version an article is applicable to.