Yes, it's good to start with the easy ones first. The Op25 No2 is one of the simplest etudes as it's notes are rather easy to follow and learn. In addition, you could try Op10 No9, which is mostely an etude for the left hand. You could even try Op10 No12.

Try to resist the temptation to try out the harder etudes. (Heck, I'm not even that standard yet!

) Leave the 'Winter Wind', Op10 No1 and Op10 No2 to next time.

By the way, judging by your repetoire, it would be good to add in some Czerny to your etude repetoire. Try the 'School of Velocity. It helps train your fingers.

Good luck.
ihatepop