I read Total Guitar, Guitarist, Guitar Techniques and Guitar Buyer
(listed in order of purchasing/reading frequency)
I don't read them every time they come out, because most of the time I pinch them from my Dad.
I read them for news, techniques, interviews, songs and gear reviews. So, all in all, their entire content. And D'you know the stupid thing? The first 3 on my list are made by the same publisher!