If you aren’t reading http://www.manager-tools.com (and listening to the podcast), you are missing something special.
No, you don’t have to want to be a manager to benefit. Go. Listen. Now.
Particularly poignant to our profession is the episode Solution to a Stalled Technical Career.
I’m compelled to link to them since I’m shamelessly adopting the phrase “…or your boss will mess with your addiction to food, clothing and shelter.” I love it.