I don't know about ready maps, but I started to make my own maps as I was always getting lost, now I do have few maps and even those are not too accurate I can find my way at least.
Pen and paper is best solution, imo. Also when you make your own map you will gain more knownledge about are than when you look map some other has made.
Edit: Oh, now I remeber what PS reminds me, nothing less than best RPG there was when I was bit younger, Dungeon Master (Well also reminds from Eye of the Beholder).
What are those faces like question marks, you are too young? It was not that long ago, but here is little information
http://dmweb.free.fr/There were no maps and there was no internet to ask help, of course there was thing called BBS, anyway there I made my own maps to not get lost and those maps became quite hugh as one square of map was one square at paper. But it really was fun and now I have found same thing with PS and making maps here