Stan Winston School are sharing a free Photoshop character design tutorial by Dan Luvisi.
Free Photoshop Brushes
Several professional artists have made available their Photoshop brushes for free.
You Found Me - Timelapse
Check out this timelapse of Cezar Brandao's recent sculpting livestream.
Ben Mauro - ZBrush for Environments
Ben Mauro has released a free 3D environment design tutorial using ZBrush, Keyshot and Photoshop.