Wow, I don't know... I admit I've never tried to learn the Chopin Etudes (except Op 10 # 1), but that sounds like an awfully big jump to me from Bach 3 Part Inventions!But I would agree that Chopin is a great place to start. Many of his pieces have a low difficulty/greatness ratio, and most of them are short, so you won't get bogged down. Some of the Preludes, mazurkas, nocturnes and waltzes are good for beginners. Be careful with Schubert. Chopin is often a lot easier than he sounds, but the reverse tends to be true for Schubert.Schumann's Album for the Young is a good introduction to that composer. For modern music check out Bartok's Mikrokosmos, specifically designed for students. Start with Book I and work your way through.I support 100% your idea of only learning pieces that you have some chance of playing well. Easy pieces by great composers can be very rewarding. If you tackle a piece that's too hard for you, you'll spend all your time learning the notes and never get to make music....