I go by Tzi, mainly because I'm a fan of the silent T, Tzeitel, Tzofi, Tzoya,
I am somewhat of a novice at map making, but its a personal hobby of mine. Well World building is, and who can build a place without charting it out? Well I can't anyway. I mainly create worlds for fantasy Tabletop RPG settings to take place on.
Currently I use GIMP 2.8 for most of my map making. I do have a copy of Photoshop 7, but am completely inexperienced with photoshop and have never actually used it too much.