They do change things around a lot, and it's not always obvious how to get things done (eg feed blogs in etc) but there are alot of great tutorials around, so the info is out there.
The time thing I can't help with I'm afraid - it's one of those catch 22 situations I think. Either you have the time to do it or the money to pay someone to do it. If you have neither the time to do it yourself or the money (or the WILLINGNESS to spend the money) on someone else doing it then you're stuck.
I do believe Facebook is good for business (but I of course would) and have gained business and sourced supliers on there. I've also impulse bought quite a few things (especially for Baby O) as a result of seeing their Facebook fan pages, as has Shaun.