John,
Have you listened to podcast 200? If not you need to go and listen, it will help answer some of your questions. You will hear it mentioned on that podcast but if I were in your shoes the first thing that I would do is write and stick to a family/personal budget. You mention not having much money and there's only two ways to fix that, make more money and spend less money...both at the the same time are obviously the best. There are great books out there that teach you how to do this.
While you learn to handle your personal finances, get on BP and read as much as you can. Learn about your local market, join the local REIA.
As Brandon always talks about on the podcasts, there are plenty of ways to buy houses with no money, at least none of your personal money, but it almost always takes someone's money to buy a house. You can find a partner or have seller financing or any of the other host of ways to buy property.
That's where I'd start in your situation. I can give you this advice because I was in much of your same situation 5 years ago and by doing what I outlined above, the last two years have been very good to me.
Take action.