Start here

Three short chapters give you the whole picture before any detail:

1. Why rendimiento exists: the problem it replaced, the decisions that shaped it, and the history of how your apps moved onto it.
2. Concepts and vocabulary: the dozen words the rest of the book uses (app, service, run, release, add-on, need…) and how they relate.
3. A tour of the UI: every page of the dashboard and what it is for.

After that, pick the part of the book that matches what you want to do: run it (Your environment), understand it (Architecture), use it (Using it), change it (Developing it) or grow it (Growing it).