Customizing Llama Models: self-help guides

Customizing Llama models is one, if not the single most valuable thing about Llama models (due to their open source nature).

What can Meta provide to help developers in taking full advantage of the models' customization potential?

I think the most useful answer for us at Meta to hear from the community is: how can we create self-help resources that the community can leverage to democratize access to model customization?