Favorite Poker Books

I'm looking to improve my game by finding a few good books to read.

There are a ton of choices out there so I'm looking for some recommendations for the intermediate/advanced skill level.

Also, are online poker courses worth it? I get a ton of targeted advertising from all the youtube videos I watch, and I'm starting to crack. HELP!!

The Mental Game of Poker is a very good read.

I read Jonathan Little

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