does anyone know of a book or manual or something that could help me understand things like: how to use mixers, what subwoofers are, using speakers and monitors, and all the stuff i need for live sound or for band practice. thanks!
I don't know of any books; I'm learning from a guy in one of my bands, who has been picking this stuff up from guys in other bands, and so on. Try talking to other bands in your area.
My advice is just to google it iam sure there will be some sort of help guide or advice on there. Infact thats what iam a way to do just now!