How about a Rail Fence quilt pattern, they are easy and look effective. If you google "free rail fence quilt patterns" or "free beginner quilt patterns" it comes up with so many wonderful patterns. Or use the search button here on the quilting board, just next to the logout button and try either rail fence or beginners quilt patterns and see what comes up. Also have a look at the tutorial section here on the board, so many wonderful members have put clear instructions on various patterns. The disappearing nine patch (D9P) is another great pattern that has a great tutorial. Just give someting a go and if you get stuck all you need to do is ask for help here.
Hope this has helped a bit :D