AliasEDU - Photoshop : Select and Mask
https://www.aliasedu.com/select_and_mask
Making good and precise selections and masking elements are one of the most important and hardest techniques in photoshop. This is where a lot of people struggle and always doesn't get the results they would like.

Photoshop : Select and mask -workshop gives you all the needed techniques and tools so you can isolate pretty much any element from the background.

Welcome to the world of masking along with internationally awarded retoucher / digital artist Antti Karppinen