Recent books about Steinitz:
William Steinitz, Chess Champion by Landesberger
Games Of Steinitz First World Chess Champion by Pickard
Chess Secrets: Giants of Innovation: Learn from Steinitz, Lasker, Botvinnik, Korchnoi and Ivanchuk by Craig Pritchett
Wilhelm Steinitz: 1st World Chess Champion by Isaac Linder & Vladimir Linder
Steinitz: Move by Move by Craig Pritchett
Regarding Polgar - it's better to have various kind of books. 1x Polgar, 1x Kasparov, 1x Tal (Fischer etc) >>>> then 3x Polgar LOL
Classics - you've alreay one classical - Nimzo. Time to move to modern times.
Didn't fischer study like 1000 steinitz games? I figure studying the classics first will help me improve.
Thanks for the advice, I'll keep it underconsideration.
Still undecided about what to buy first