I'm a total nut about advising my clients to go see a good mortgage professional before looking at properties. Knowing your budget, product options and strategy for financing your home is huge! Plus, when the right place comes along, you will be ready to make a stronger offer that will ice the competition.
The Mortgage Professor offers excellent tutorials for consumers trying to understand the scariest thing on the planet... deciding on a mortage product.
I suggest you study up with the Professor after your lending professional presents several options to you.