Well, it just so happens that I have a list prepared to tweet out—figured I'd share here as well :)

How to Win Friends & influence People

Never Eat Alone

The E-Myth Revisited

Jab, Jab, Jab, Right Hook

Tribes

Linchpin

A Whole New Mind

The Neatest Little Guide to Stock Market Investing

The millionaire Next Door

Cashflow Quadrant

Why We Want you to be Rich

Drive

Rework

The 4 Hour Work Week

Entreleadership

Thou Shalt Prosper

Driven

How to Get Ideas

The Go-Giver

http://www.amazon.com/How-Win-Friends-Influence-People-ebook/dp/B003WEAI4E/ref=sr_1_1?ie=UTF8&qid=1405636210&sr=8-1&keywords=how+to+win+friends+and+influence+people

Cheap, simple, and will help you for years to come.