I get on average 5 calls a week from first time buyers that say "I don't know where to start".  For each one of those I tell them they made the right first step.

A trusted local realtor can guide you down every step of the path to home ownership. 

They can help you understand how credit scores affect interest rates, what programs are available to help with down payments, in what instances can I have seller pay closing costs and so many more questions that all first time buyers have.

From there they will guide you to lenders, inspectors, and title companies that will help make the process as easy as possible.

So when you don't know where to start, just make the call.