Writing Copy For Dummies Useful reading for newbies to copywriting. Very helpful and fairly comprehensive.
Bargaining for Advantage: Negotiation Strategies for Reasonable People Very amusing little book It's amazing how much knowledge the author imparts in a small space. I love it!
Createspace & Kindle Self-Publishing Masterclass: The Step-By-Step Author's Guide to Writing, Publishing, and Marketing Your Books On Amazon Very clever book about negotiations. Great for beginners and experienced alike.
The Small Business Valuation Book: Easy-to-Use Techniques That Will Help You… Determine a fair price, Negotiate Terms, Minimize taxes Excellent overview of buying a business. A little bit weak on the online side of things.