I've been a product manager for about 2 years, coming from a development background, I suggest getting as much technical background as possible and a nice helping of people skills.
It's been said before but the PM is mainly a servant and facilitator, and it helps a lot if you know what you're talking about (we have a PM here that confuses VPNs with DNS, doesn't know how to report bugs, etc.)
IMHO, getting to be a PM is mostly demonstrating that you're dependable in a lower level position and showing that you have enough knowledge/leadership skills to get the job done.
It's been said before but the PM is mainly a servant and facilitator, and it helps a lot if you know what you're talking about (we have a PM here that confuses VPNs with DNS, doesn't know how to report bugs, etc.)
IMHO, getting to be a PM is mostly demonstrating that you're dependable in a lower level position and showing that you have enough knowledge/leadership skills to get the job done.