Freebie Magazines Online
Several Linux-centric print magazines have their back issues available on the web. In most cases, the freely-available ones are several months old, but if you can deal with that it's a cheap way to get the content.
So far, there are two that I'm aware of:
- Linux Magazine: Back issues are approximately six months old, maybe a bit later.Signup and Login is required.
- Linux Journal: Articles are free to access, and there's about 13 years of magazine issues here, including (from issue #1) an old interview with Linus Torvalds
Plus one that *used* to have back issues online, but still offers a digital subscription service: Linux Pro Magazine (aka 'Linux Magazine' in Europe)
There are a number of online-only 'magazines' that have sprung up in the past year. The trend seems to be towards a format reminiscent of a blog, but with content published in large chunks. Of these, my favorite is Free Software Magazine which is up to issue 20 now.
Edit: fixed typo