I'm reading this book at the moment, and although it's not about being primal(Mark Boyle is/was vegan) I still think it has a lot going for it. Besides it's very well written.
The idea of cutting down on expenses, being environmentally friendly and becoming more self sufficient are all things that fit with a primal lifestyle I think.
I definitely feel inspired to grow food, forage and try and make more things myself!

Some related websites:
The urban guide to becoming self sufficient 'ish' | Urban Homesteading on a budget
justfortheloveofit.org | Promoting Skillsharing | Learn Skills, share tools, save money and make great new friends