How To Brew, of course. Designing Great Beers is a nice book for in-depth coverage of a variety of styles (although not all are included). BCS has a recipe for most styles and good brewing tips. I’d also recommend Yeast, a new release that has some of the newer advice you can get regarding ferm temps, starters, etc.
These three are my favorites. I’m always coming back to them, although Designing is not quite bedtime-friendly reading. I like to have a calculator with me when I read that one.
I have all these except for “tasting beer”. I would agree with phillamb168 that Designing is not exactly bedtime friendly. Brewing Classic Styles and the Yeast book by Jamil Z and Chris W are also excellent books. The Yeast book is not very bedtime friendly as it gets quite technical.
Something to keep in mind about DGB is that it’s getting very dated at this point. There are a lot of new ingredients and techniques that aren’t covered in the book.
Looking for both light reading and more detailed indepth books as well.
Wife and I have a book shelf in our room, I have one shelf to myself that are all pretty much DIY type books for my various hobbies. Aquariums saltwater and fresh, reptiles, classic cars and now beer! I think this is going to be one of the most rewarding hobbies ive ever had because other get to really try my beer and share with me what they think.
I have quite a beer library, collected over the past 20 years. The one I reach for most for reference is Brewing Lager Beer by the late Greg Noonan.
For recipe formulation help I like Brewing Classic Styles.
For general recreational reading I like Radical Brewing.