Agile Crash Course
Read Scrum and XP from the Trenches. Everything you need to know is there.
Know the Agile Manifesto and the principles behind it.
It’s not rocket science. It’s all about common sense, adapting, challenging the status quo, transparency, collaboration, self-organization, equality, and trust. It’s not about egos, hierarchies, process, CYA.
Read Getting Real by 37signals.
Good blogs to follow:
Stuff I’m working on: Peer reviews, code reviews, TDD