The E-Myth Revisited by Michael E. Gerber. Common myths for entepreneur and to use this myths to start a business.
The 4-Hour Workweek by Timothy Ferris. A book about the lifestyles and methods on becoming successful and rich.
The Lean Startup by Eric Ries. A great book for those who wants to start a company. This contains a lot of useful ideas for entepreneur.
The Millionaire Fast Lane by MJ de Marco. A great read for people who wants to make millions. This book is a guide and success story from the millionaire himself MJ De Marco.
Ignore Everybody: And 39 Others Keys to Creativity by Hugh McLeod. Guides, ideas and insights how to get your creative juices flowing.