As long as you’re following the manifesto and the principles, you’re good. You’ll notice this doesn’t talk about scrum or kanban or safe or whatever, those are processes that try (sorta) to follow these. But if you’re ever in a situation where somebody says “this is the process we’re supposed to do” hit them with the manifesto.
The book in “by the book”; Any book to recommend?
As long as you’re following the manifesto and the principles, you’re good. You’ll notice this doesn’t talk about scrum or kanban or safe or whatever, those are processes that try (sorta) to follow these. But if you’re ever in a situation where somebody says “this is the process we’re supposed to do” hit them with the manifesto.