If you are a writer of any genre and at any stage of the writing process, I recommend that you read Before and After the Book deal: A Writer's Guide to Finishing, Publishing, Promoting and Surviving your First Book by Courtney Maum. I was so taken by her frankness, accessibility, research, encouragement and humor. This is your MFA in the writing and publishing life contained within a single book. The chapters are easy to digest and the resources listed at the end will save you time in the future. I will be assigning this book to writers for years.
I'll stop praising it only so you have time to read it.