Even though I'm a newbie here, and only 15 years old, I played a lot of difficult pieces like Chopin's Etude 25/1 and Mozart's 18min-long K.570 Sonata.
I think don't make the "Winter Wind" as your 1st Chopin Etude. The right hand is hell fast and almost non-stop for 3 1/2 mins, and you need a hell lot of stamena and endurance to play it.
I have 3 suggestions as a 1st etude(The difficulty depends on the color. Red is the hardest, blue is the easiest).
1. 10/5. Most pianists I think start in this etude. Its tiring for the right hand, but can improve endurance and hand manuverability in the Black Keys. This can help a lot in playing the winter wind.
2. 25/2. Its just like the winter wind, the RH has the same speed, but less taxing and half its length.
3. 25/1. The tempo is almost the same as Winter Wind. Both hands are as fast as the Winter Wind, but less taxing, and can help a lot in endurance.
But if you want to play Winter Wind right now, start learning each 4-bar phrase slowly at 1st, seperate hands at half the speed, w/o dynamics. Play all the notes on the right hand not softly, just plain forte, or as loud as you can. Then the left hand. Then play both hands, but w/o the dynamics. If your satisfied, add the dynamics and gradually increase the tempo. If your done, continue to the next phrase and so on. Then try playing it at full speed, I swear it will take a lot of physical stamena, especially because the fingering of the RH is VERY uncomfortable!
