I would check out the blog site www.activerain.com. Its a blog site for realtors, mortgage brokers, inspectors, and everyone else that you would use to buy a house, to blog about their industry and to inform the public. Do a search, read the blogs, and find the one that would be a great match for you. You may find that one person's perfect experience with a certain mortgage broker will be a nightmare for you.
Most of them are pretty transparent about who they are and how they work.
If anything you will learn a lot about what to expect thru the entire process.
If you have any questions, you can contact my hubby, he's a realtor... he has 3 trusted mortgage brokers that he uses. He specializes in 1st time home buyers as well. He'll be happy to answer any other questions you might have. Todd - ###-###-####
Thanks and good luck!
S.