This is legal handbook MUST read for anyone thinking of writing for a living!
Self-Publisher’s Legal Handbook: The Step-by-Step Guide to the Legal Issues of Self-Publishing
by Helen Sedwick is probably the most important book that a writerpreneur needs, You will find information on taxes, contracts, copyrights and much, much more.
This is a must have for your library. When someone tells me they are thinking about writing for a living, as an author or a freelancer, I tell them that this is the FIRST book you need to read!
Helen was also a guest on the Writing Biz here is a link to that episode SO, YOU WANT TO BE A WRITERPRENEUR?: YOUR WRITING BUSINESS