Can't believe I'm saying this but... Norg's idea is a decent one. Not the taking pictures of the pages of the magazines he wants rather than buy them, but in general, music mags can be a good source of information on new music. If you're into metal, I guess
Kerrang! is still the go-to, or maybe
Metal Hammer, whereas for Prog it's, well,
Prog Magazine (formerly
Classic Rock Presents Prog) and then there's
Classic Rock itself, and its various spinoffs (
AOR, Pop etc) and no doubt plenty of other mags on other genres.
If you don't want to buy all those mags, a subscription to
Readly is a possibly cheaper alternative, which will allow you to read all the mags they have in their catalogue, including most, if not all, of the above for about 9.99 a month. Given that most mags cost more than that for a single issue these days, not a bad deal. You can also at the moment get two months free - which I'm availing of right now - and then cancel if you wish.