Is Fischer the right choice though? Might be hard to grasp his genius.
Usual classics that are recommended for studying are Capablanca, Rubinstein and Alekhine.
Personally, I find Alekhine quite hard to follow sometimes, but Botvinnik on the other hand is pretty logical.
I'm currently studying Fischer's games.
I'm going to share with you whatever I save in my dossier.
All puzzles require that you play through these samples, trying to guess what Fischer has moved in the game.
Through repetition/ memorization, you will be able to emulate (at least, partially) Fischer's style & incorporate it into your games. It will also help you to understand planning, activity, coordination, intuitively.
N.B. Samples are blunder-free. Nevertheless, some moves are weaker, from an engine perspective, in order to illustrate human play/ initiative.
Enjoy!