What are /r/UltimateTraders' favorite Products & Services?

From 3.5 billion Reddit comments

Here’s a great book that helped me get started trading options! You can find it on Amazon.

https://www.amazon.com/dp/B09MC93FWL/ref=cm_sw_r_awdo_navT_a_NPE8M4Z3R26T4CGN0X7Y

It’s called The Ten Trade Commandments

Reminiscences of a Stock Operator: Edwin Lefèvre, Roger Lowenstein: 9780471770886: Amazon.com: Books First read this in the 90's and reread about every ten years. The word "classic" is somewhat overused but it really applies to this book.