I also got the Point'n Click book, it's great.

The nicest books I got so far are the 3 masters of pixel art books, you can grab them here: https://nicepixel.se/product/triple-...-volume-1-2-3/

Volumes 1 & 2: some of the best pixel art work ever created on the Amiga and Commodore 64 and other retro 8-bit platforms like the Amstrad CPC, ZX Spectrum, Atari XL-XE, Commodore Plus/4 and MSX. Plus the volume 3 featuring contemporary pixel art.