I'm trying to teach myself PHP and MySQL (PHP and MySQL Web Development by Luke Welling and Laura Thomson) but I'm having trouble figuring out how to get them installed on my macbook. I'm supposed to have them in working order before I can proceed, but there are numbers of options offered (I think it was directed to window users). I'm kind of hesitant to pick because of the security issue I might will have to deal with later on. Also from what I've just read, most Macs have PHP and MySQL already installed; all I have to do is just activate the Apache program. Can someone point me to a good link, thread, or something that clearly illustrates how to do that--any helps/clarifications will be greatly appreciated. Many thanks in advance.