In this one I'll simply cover all of the most important principles of texturing in Blender, to get you up and running with a great foundation.
0:00 - Intro
2:20 - Adding and assigning materials
4:40 - All material properties
20:27 - Intro to PBR
22:00 - Intro to shader nodes
25:05 - Image textures
43:05 - Procedural randomizing techniques
50:44 - Making re-usable node groups
59:32 - Recap