Hi Sarah, welcome here! I think you'll find that there is a lot of support here.
As far as exercise goes, I've been doing the Couch to 5K program (there's a thread over on the exercise board with a link) which is a 9 week running program. I've had success with it. I can't really comment on much else since that's all I've been doing up till now but I'd like to start strength training, but don't want to do it in a gym or buy a bunch of expensive equipment. Hopefully more suggestions come in!