For textures, i learned procedural textures from here, there are also other sources in the thread:
Direct link: https://docs.google.com/document/d/1fWaorEppgDpnP08XbTKipR7S0JdARZgoMI9ApmCmBa4/edit
I recommended not to try all at the same time, that would be frustrating, it needs some time for each part.