Local Goat club (There's a Worcs Goat Society) and you only need one book Goat Husbandry by David McKenzie.Also depends on what you want the goats for
While McKenzie's is the most detailed book, and the one I usually rely on, I think it can be a bit heavy going at times, maybe better to read a couple of more lightweight books and get a little understanding before heading for the top diving board? (meaning McKenzies book of course)
(but certainly good to get all the info before embarking on the adventure)