Are these pieces considered serious repertiore? Also, is it a good idea to learn some of these to advance to his more difficult repertoire? If so, which ones and what do they practice (Speed, chords etc.)
I think these are great pieces, and a very good preparation for the Preludes and later works. Highly recommended!
What is the difficulty of these pieces? I've played Op.3, should these be fine to learn or would they still be a challenge?
4 and 2 freaking suck dude...To play that is lol.