to do a banner when you click new there is a drop down that says size drop that down and go to the web banner one click that click no back ground then just start having a play with diffrent brushes and coulors maybe down load more brushes then maybe add some pics just have a play you learn by doing so just play with it until you are happy look on some ps forums gets some help. I think there is a photo shop video podcast i read somthing about in a forum you could look on there. hope this helped get some pic of what u make up when you have had a play.