And hopefully after my playthrough as well
I myself has learned everything by just Googling, I don't have any goto-sites for learning about specific problems. Wait, that's not entirely true. I can definitely recommend the Arch Linux Wiki, for specific technical problems.
And for playing good old games, refer to winehq.org, and playonlinux.com.
And as I said earlier, try Linux by installing Ubuntu or Puppy Linux to an usb drive, as those are very user-friendly, and has good forums (they are good people, hehe).