I wanted to make this topic so i can just refer people to this one. Safes me (or us) time since there are alot of topics about them and im too lazy to say stuff over and over
About wich etude to pick:Try to find out what your biggest flaw is and pick the etude wich handles that flaw. For example, usually the main flaws are the fingers 3,4,5 of the right hand, and the left hand in general. You could use op. 10/2 or op.25/6 for the right hand, and for the left hand i would advice op10/9 and op10/12.
About how to study them:1) Find a good recording. This safes time in figuring what the right notes are. I like the Lugansky recordings alot.
2) Get yourself a good book. After all, only with the correct fingering you can play it correct. Although expensive, Edition Peters rocks. And you could also copy the sheetmusic from the library.
3)
Play them only at the speed at wich you (hardly) make any mistakes!!!! This is probably hard for many people, but rushing will make you screw the piece up and repairing mistakes is alot harder than doing it the right way at the start.
4) Try to NOT use the pedal and listen to your playing very carefully. People tend to use the pedal alot to cover up their mistakes. But that way you'll never get full techical controll over the piece.
5) If you can play one part of the etude decently, stop learning it and start with another part wich you can play less well. Playing certain parts too often will rape them.
6) If you have trouble playing certain parts nicely, try playing playing the notes in different rithms. For example emphasize every first, second, third OR forth 16th note.
7) Dont focus too much on one etude. Go learn some nice Schubert pieces or whatever, alternation is good to give your brains some time to remind the learned.

Last step is to add musicality to the piece. Practise the musicality at slow speed, the speed at wich you can play everything correctly at the same tempo.
Finally i would advice to realise yourself that it will take VERY long (months/years) to be able to play the etude at the speed as indicated on the sheetmusic. But the great thing is that you WILL notice that your technique is increasing. And training with these etudes is alot more fun than doing Czerny/Hanon/Brahms excersizes.
Good luck,
Gyzzzmo
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