Hm, I always found that a bit scary. The problem with custom roms is that there's so many outdated docs, stickies and whatnot everywhere. You think you found a solution, only to read in some other article, that the combination you'd have tried is out of date and will brick your phone etc. That's why a really direct pointer from people, who have done it, is helpful. I don't trust all that varied info anymore, hard to filter out the most actual combinations that work. I'm usually someone who just tries things out, been with linux since version 0.99, but with so many warnings about bricking everywhere, I hesitate :)
Note that you do *not* need to install a custom rom. You need to unlock your bootloader, and install su (for root access) This is different than a custom rom.