Hi, Steve!
Welcome to 3FC!
Your best bet is to look around at the various areas of the forum, post here and there, and find a spot or two you're comfortable in.
Most of us have "hopped around a little" searching for a niche. The first one isn't always the best.

There are all kinds of exercise threads, different weight loss program, etc to look through.
Lucky Abbey having a stay at home Dad.

Enjoy every minute of your time with her.