My suggestion is to start with some designs that aren't really condensed. The closer together the lines in the design are, the easier it is to get confused or to get on the wrong line or to go backwards when you meant to go forward. So when you are just starting out, try something a little more open. That will give you an opportunity to learn how to line the pantos up when you advance your quilt. Another thing that I found helpful is to choose patterns that interlock.
One of my favorite designers is Jodi Beamish (Willow Leaf Studios). I also like pantos from Lorien Studios and Dave Hudson (The Pattern Man). If you are looking for a really, really easy panto that looks great on just about anything, try Chantilly Lace by Norma Sharpe. You will find with pantos that when you get comfortable with them you will naturally wnt something a little more complex.