I was going to add this to an existing thread but they all seem to get derailed into a discussion on scale. Judging by conversations on here Legion seems like it might be first plunge into painting minis/terrain for a few people so with that in mind I thought i'd give this as a starting point...
If you go into the general message board you will find a lot of info on painting basing tools terrain etc
There is also a SF specific board with a Star wars board included.
Hope this helps.