[mburee]

I also highly recommend pretty much anything from Renaissance Periodization (YouTube, more on their website, but that's paid).

They cover a lot of theory, mostly about hypertrophy rather than strength, but really high quality stuff!

Also just stay skeptical, many 'universal' truths by people like Mark Rippetoe and friends are questionable. Starting strength is still a great resource for getting through the initial beginner stage though.