Free Circle Magazine is a monthly, free and independent e-magazine dedicated to the Ubuntu family. Every month you can download the magazine in PDF format from their website. Articles are available in a range of categories, like How-To’s, Q&A, letters, interviews, reviews and opinions, etc.
The latest issue available is October 2008 and contains very useful articles. I particularly liked the one titled “Command and Conquer”, which was about package management in Terminal (and not the popular game of the same name 😛 ) I think that article would be great for new Ubuntu users.
There are also a couple of How-To articles; on GIMP, on how to secure a network drive, on how to install Ubuntu 8.10 and also on programming in C.
Download the latest issue from here.