My favorites?
How to Get Rich by Felix Dennis.
http://www.amazon.com/How-Get-Rich-Felix-Dennis/dp/009192166...
Differentiate or Die by Jack Trout
http://www.amazon.com/Differentiate-Die-Survival-Killer-Comp...
Art of the Start by Guy Kawasaki
http://www.amazon.com/Art-Start-Time-Tested-Battle-Hardened-...
The 22 Immutable Rules of Marketing by Al Ries and Jack Trout
http://www.amazon.com/22-Immutable-Laws-Marketing/dp/1861976...
Digitial Aboriginal by Mikela Tarlow and Philip Tarlow
http://www.amazon.com/Digital-Aboriginal-Direction-Instincti...
and, of course
Founders at Work by Jessica Livingston
http://www.amazon.com/Founders-Work-Stories-Startups-Early/d...
Hackers and Painters by Paul Graham
http://www.amazon.com/Hackers-Painters-Big-Ideas-Computer/dp...
Before you do anything else, go to paulgraham.com and read all of the essays! I don't want to sound like a shill or hero worshipper for pg, but, understand, these essays are the very best thing out there for anyone on this forum. I am here because of the essays, not the other way around.
http://www.amazon.com/Hackers-Painters-Big-Ideas-Computer/dp...
http://www.amazon.com/Hackers-Painters-Big-Ideas-Computer/dp...
From 2004, but comprised mostly of essays that are on his site.