In the last couple of years, thebeijinger.com has gone downhill as far as usefulness, IMO. Now more oriented to entertainment for the 20-30 year old set. However, on the forums, there are some nuggets of wisdom. I suggest you start with a check of the International Newcomers' Network website:
http://www.innbeijing.org/
They have a welcome coffee every month for new expats. But you can contact them when your move is confirmed and imminent. This book is a very useful guide to living in Beijing. I'm not sure if it can be sourced outside Beijing but you can check it out the Immersion Guides site. Most expats keep one of these around, as that is the intended audience (not tourists).

Beijing is great for expats, especially trailing spouses as there is a pretty good community spirit, lots of different groups to get involved with (also working depending on your credentials and initiative) and things are accessible and not snobbish. But there do tend to be different "crowds" that have somewhat different mindsets, access to resources, and information networks. If you and husband come, which group best describes you?
a) diplomatic
b) corporate sent to China on fixed assignment
c) own company/entrepreneur, open-ended stay
d) teaching (university level or Chinese corporate training)
e) teaching (all other)
f) not employed or freelancing (artist, writer, etc)

If you are in group c or f (and maybe d, e), then you will have to be more self-reliant on things like advice on housing, health care, etc. Groups a and b pretty much have the bumps all smoothed out for them already, and have plenty of cash to maximize options.