The following investment books are available for free at Amazon (AMZN) in Kindle format. If you are interested in any of these, you should probably get them now, as these free book offers often don't last long, depending on the book.
925 Ideas to Help You Save Money, Get Out of Debt and Retire A Millionaire So You Can Leave Your Mark on the World
How to Get Started ETF Investing: Your Step-by-Step Guide to Starting an Investment Portfolio with Exchange Traded Funds
The ABCs of Money
Retirement Solutions: Financial Strategies for Today's Retirees
3 Stupid Simple Steps Towards Financial Freedom: There's something more important than money. Can you guess what?