Hate to be negative but this is one of the worst programs I've seen in a long time and I've been on the Internet since 1995. The moderators don't help much at all.
For example they tell you to look at Protect Alpha but don't tell you if it should be on or off when you're having trouble using the brush tools.
"With the Brush Tool selected, you might want to look at the "Protect Alpha" setting on the right side of the Context Toolbar" Yeah that was helpful. Now I know why a lot of my friends go back to Photoshop. I've tried everything to get the brushes working but absolutely nothing happens no matter if I put a transparent pixel layer on top of what I want to paint. And I'm not going to go into the other things that this program can do. In Photoshop you could take, and by the way I'm not a big fan of Photoshop, but it was intuitive. Again you could outline a piece of a photo copy it and paste it in another photo without any problems. Anyway I can go on forever about the problems here never really get a good answer. I do wish good luck to all the people that I have to use this program. Take care