hi Leylia, welcome to the guild ... check out our tutorial and when you're ready to map yourself post in a WIP (work in progress) thread for help and critique.

I've used fantasy grounds for playing D&D online with friends, it features dice-rolling a chat window and the possibility of showing pictures and maps (or parts of maps) to your players ... a lot inhere commend Map Tools as well - haven't tried that but it looks good and also have fog-of-war feature (not showing things your players can't see).