(Embedded) Linux Journal

[Warren Togami]

http://www.embeddedlinuxjournal.com

Linux Robot guy,
This magazine may be of interest to you.  Their subscriptions are free.

Everyone else,
http://www2.linuxjournal.com/
I highly suggest Linux Journal magazine for everyone learning Linux.  They
have many informative articles on a wide variety of Linux topics from server
administration, security, programming, multimedia, games, and
hardware/software reviews.  Things usually get on the very technical side,
but their material is always informative and cutting edge.