Thank you everyone!

I already managed to do some things with gimp today (I'm proud, because I'm starting from the very (very!) beggining!). I hope it will work for the next step ;-)
I am really enjoying this community.

About the world project you've created, i'll get a look at it, but my world is already almost done, and the map is already drawn... But that's not a problem, I will probably add some maps to the list as soon as I will be good enough to do so.