Here Are Some Great Books That You May Find Helpful

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.

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

Stop Wasting Time & Burning Money: How to Crush Procrastination & Live the Life of Your Dreams
by Lany Sullivan and Ryan J. Rhoades

Eat That Frog!: 21 Great Ways to Stop Procrastinating and Get More Done in Less Time
by Brain Tracy

How to Blog a Book: Write, Publish, and Promote Your Work One Post at a Time by Nina Amir

The Author Training Manual: Develop Marketable Ideas, Craft Books That Sell, Become the Author Publishers Want, and Self-Publish Effectively
by Nina Amir

The Freelancer’s Bible: Everything You Need to Know to Have the Career of Your Dreams-On Your Terms
by Sara Horowitz and Toni Sciarra Poynter is the the one-stop, all-encompassing guide to every practical detail and challenge of being a nimble, flexible, and successful freelancer.

The Right-Brain Business Plan
by Jennifer Lee is wonderful book that brings the right and left brain together to make one awesome business plan.

The Unofficial Book On HootSuite: The #1 Tool for Social Media Management
by Mike Allton is THE resource for businesses and professionals who want to take their social media presence and activity to new heights, and want HootSuite to help them get there.

The information in The Nonfiction Book Proposal Demystified: An Easy-Schmeasy Guide to Writing a Business Plan for Your Book
can also be used as a template for a fiction proposal, since today more and more fiction publishers require proposals quite similar to nonfiction proposals, or as a simple business plan for making a self-published book a success.

In Platform: Get Noticed in a Noisy World,Michael Hyatt will teach readers not only how to extend their influence, but also how to monetize it and build a sustainable career. The key? By building a platform. It has never been easier, less expensive, or more possible than right now. . .

Frances Caballo is a social media wiz. Her books are easy to understand but still provide the depth of information that you need to succeed on social media
Social Media Just for Writers: The Best Online Marketing Tips for Selling Your Books
Blogging Just for Writers
Avoid Social Media Time Suck: A Blueprint for Writers to Create Online Buzz for Their Books and Still Have Time to Write

Stephan Hovnanian is one of my favorite Google+ experts, he authored the Google+ Pro Tips series of books.
Google+ Pro Tips: Strategies for Posting and Sharing on Google+
Google+ Pro Tips: Managing Your Google+ Circles
Google+ Pro Tips: How to Get More Visibility on Google+
Google+ Pro Tips: How to Bring Your Audience to Google+

and he is working on more!