Home Buying...

I am starting the process of buying a house. I feel so lost. The first step, for me at least, is to talk to a mortgage broker. Guess I'll see what he has to say and then decide if I am ready. I have so many half formed questions in my head. I'm still at the point where I don't even have an entire question to ask. All I really know is that I need more money, I need more down payment and that making a commitment this big scares the holy hell out of me. yikes.