When audio is your occupation and your hobby you read a lot on the subject. If there's one author who stands head and shoulders above the rest in the audio world the vote could easily go to Bobby Owsinski. He's written an abundance of titles on all different areas of audio and music and we love them so much that we keep links to them all on Amazon right in the side bar. Just pick one. There are sixteen (!) of them. You can't go wrong.
It doesn't matter if you're interested in mixing, mastering, music business, studio building, guitar, drums, making your band better or nearly anything else that you can think of, there's a Bobby O title that covers it. Some of the material is shared between books, especially some of the interviews that have bearing on more than one topic so you may see the same bit in more than one place occasionally.
Bobby is also a prolific blogger. Honestly he's a good bit of our inspiration over here at SNR. Getting posts up every day of the week is a difficult feat as we found out when things started to sputter for us about nine months in. Both blogs are worth checking in on regularly. One is on music production and the other geared more to the music business. Here's the links.