I might get shot for saying this, but you are far better of spending your money on good books that have good, solid tying instruction and/or lots of dressings for trout, or salmon, or steelhead, or salmon and steelhead than spending money on magazines.
Back when FLYTYER (which is ostensible only about fly tying and flies) first hit the market in the 1970's, it was a terrific resource for fly tyers that was full of great tying hints and techniques encompassing all levels of tying skills from rank beginner to the very advanced married-wing tyer. However, after it was sold a few times, it became a very different magazine.
It is unfortunately in my opinion now so full of "hype" and hyperbole as to not be worth the time to read the vast majority of issues. Yes, the photos a great. Yes, there are flies by some of the so-called "luminaries" (i.e. professional fly fishers-guides/shop owners/tackle reps/writers). For example, nearly every issue now has at least one "article/featured fly" that is nothing more than a material change from a fly that has been in use for many years. But of course it has a new name. Thus, why I think there is way too much "hype" in it these days.
Too bad it changed from how it was done the first 3 or 4 years it was produced. Those early issues are gems, the latest aren't. Unfortunately, many of the current articles are prone to "hype" and hyperbole through telling you this is the latest, greatest fly, or you have to get and use this latest miracle synthetic if you want to have the new, modern, up-to-date, whiz-bang, sure-fire fish getter.
If you want to learn how to do a particular technique, you are better off buying books on trout, salmon, and steelhead flies and fly tying. Same goes for dressings.
And this area of speypages is full of excellent stuff on flies and tying and is a far, far better resource than the fly tying mags. Just sayin' of course.