You may want to check out your local library, either public or university (if you're a student.) They may have a subscription that you can either check out or read while you're there, and you could get a feel for the magazine. Also, what I've done is see what magazines are available to read for free, and then subscribe to one that isn't - to expand the amount you have available to you.
I've read both Photoshop User and Layers this way.. both have step by step tutorials, but I think that Layers has their source images available online for free, whereas you need the subscription to the other.