It depends how you’d like to move along. If you’re looking for someone else to create your site (which I think you are) then you probably want to start mapping out the blueprints to your site.

Contact web firms in the area and ask if they can help you create a blueprint and how much they’ll charge. You want to make sure that the “architect” has good knowledge of all areas of web design (experience design, interface design, technical design, search engine optimization, etc). To try and determine if they’re any good, ask them for references of clients they’ve helped in this arena before. They should have gone through a similar process when building websites for clients. Call and see if the client was satisfied with the results.

After you have blueprints it’s much easier to get real estimates and determine next steps. The blueprint can also help tell you if some of your site can be built now and some later (which might save initial costs).