Rob Walling's book is a nice how-to for this kind of entrepreneurship http://www.startupbook.net/
(not affiliated with the author in any way, just enjoyed the book myself)
(not affiliated with the author in any way, just enjoyed the book myself)
I'd strongly recommend the podcast as well: http://www.startupsfortherestofus.com/
And I'll recommend this one then: http://www.mixergy.com (I am quite active over email with the host and have arranged several of the interviews - Morten Lund and John Robb come to mind)