The Macrofactor team has a great series of articles on their site that goes into probably more information than necessary. I'd also look into Mike Isratel of R

The Macrofactor team has a great series of articles on their site that goes into probably more information than necessary. I'd also look into Mike Isratel of Renaissance Periodization and their Youtube playlists, Eric Helms, Eric Trexler, Greg Nuckols of Stronger by Science, the Barbell Medicine team and their podcast, etc. For a book, you probably want Burn by Herman Pontzer. You can get more complicated than what I've described, but you now know all the core actionable information. Learning too much can confuse lots of people, but if you stick to the simpler model for actionable information while you learn the nuances, eventually you'll start seeing the simplicity in the bigger picture.