Tips by Frans Nauta:
Blog Steve Blank:
A treasure trove full of great stories, and the writing evolved into his theory of Customer Development.
Essays by Paul Graham:
Paul Graham became famous as the founder of Y-combinator, but as you can see if you read his essays, there is much more to him than that.
Stanford Technology Ventures Program
Every week on Wednesday, an entrepreneur takes the stage in the Engineering building at Stanford and shares lessons learned for about 30 min, followed by 20 min Q&A. They had Mark Zuckerberg and all those other big names before they became famous.
Marc Andreessens blog
Marc Andreessens was the founder of Mosaic and Netscape http://blog.pmarca.com
Make sure you watch his talk at STVP: