Is there a resource for breastfeeding or pumping you suggest?

I'm not going to be able to go to a class like I wanted but if I can find something that outlines the basics it should be ok, right?

I was hoping for something that includes nutrition/dietary suggestions to keep supply up. Positions for successful feeding. Common issues and how to manage them. Frequency of pumping/feeding. Storage guide.

Anything out there that comprehensive? I haven't made an attempt to search for youtube classes yet either. I'm open to suggestions!