Also read following:
Read Getting Real ( http://gettingreal.37signals.com ) - By 37signals Rework ( http://37signals.com/rework/ ) 37signals blog seris - bootstrapped, profitable & proud ( http://37signals.com/svn/posts/2937-every-bootstrapped-profi... )
Read Start Small, Stay Small ( http://www.startupbook.net ) by Rob Walling http://www.softwarebyrob.com/ - He also has a great blog
Read http://www.jamesaltucher.com/2012/01/the-10-keys-to-selling-... http://www.jamesaltucher.com/2011/04/the-100-rules-for-being...
Read The Lean Startup by Eric Ries http://www.startuplessonslearned.com/ - Eric Ries blog
Read How to win at the sport of Business by Mark Cuban his blog : http://blogmaverick.com/
Also keep in mind, most great products / services are not revolutionary but evolutionary. Google, Facebook both improved on existing ideas, Apple's ipod was not an original Apple idea/tech either : http://www.dailymail.co.uk/news/article-1053152/Apple-admit-...