As an unpublished author working on their first book, I was wondering if you recommended finishing the book first or if you thought it was ok to query an agent if I found one I wanted to work with. This particular agent wants a one page query letter giving some info about my book and myself before they will decide to ask for a synopsis, etc. Since it takes time for everyone in the publishing world to do things is it ok to get the ball rolling even if I'm not done yet?
No. You have to finish it. Then you have to polish it. Then you can query.