I've never had a computer of my own before my laptop came along, so I didn't have to transfer any files.
All of my files on my computer are organized into three folders:
/ic/ for art
/y/ for teh yaoiz
/b/ for random stuff.
And then, since I'm really freaking paranoid of someone discovering my secret yaoi collection, I have folders inside of the /y/ folder from 0-9 and they form a 4 digit pass code. It's hard to explain. Like, if you got the first digit correct, then you'd see another set of folders labeled 0-9 and once you got all the digits correct, you'd find the real /y/ folder. Lols.