Arnold’s Encyclopedia is pretty in-depth as far as exercise instruction goes. Bill Pearl’s Keys to the Inner Universe is supposed to be similarly comprehensive, but I haven’t seen it myself. Vince Gironda’s Unleashing the Wild Physique is another one. It’s a relatively smaller book, but Gironda’s info stood the test of time really well.
For nutrition, not sure what you’re really looking for. Michael Pollan’s Food Rules covers health-based principles, but there’s definitely carryover to muscle and fat loss. Ruhlman’s Twenty by Michael Ruhlman is great for improving (or beginning) your cooking skills.
Some good general choices here:
This topic has also come up a ton over the years. A quick search on the forum should bring up plenty of more options. This is one of the recent ones: