In terms of trick of specialists or market makers: Tape Reading and Market Tactics is a great book by
Humphrey Neill.
L2 reading, i havnen't really read any books on it but from personal experience its not the most reliable tool and I personally don't like using it cause it can get so manipulated.
There's a post somewhere on this forum about market manipulation as well as a post concerning L2 somewhere. Try the search function.
Best of luck