A book I very much enjoyed reading this September was "This Is Not A Drill: An Extinction Rebellion Handbook".
It's still out there. Bright Pink. Buy a copy.
As well as campaigning advice, and explanations (partial, to be honest) about the degree of climate risk, there are number of essays, including one by Caroline Lucas and a very good one (I thought) by Labour MP Clive Lewis. ('A Green New Deal' - it's chapter 26).