These are the most helpful blog posts I’ve read about entrepreneurship since founding AlumniFidelity.

Technology blog posts
Minimum desirable product by Andrew Chen
Minimum viable product by Eric Ries 
Product design debt versus technical debt by Andrew Chen
What’s your viral loop? Understanding your adoption engine by Andrew Chen
Continuous deployment for mission critical systems by Eric Ries
High availability: concurrency control by Ashish Soni
Why vanity metrics are dangerous by Eric Ries
Six tips for improving high bounce/low conversion pages by Avinash Kaushik

Business blog posts
The only thing that matters by Marc Andreessen
A hacker’s guide to investors by Paul Graham
The consumerization of enterprise venture capital by Bill Burnham  
Business ecology and the four customer currencies by Eric Ries
Top ten rules for web startups by Evan Williams
Lifestyle companies vs VC-backable startups: walk before run? by Andrew Chen
If your product is great, it doesn’t need to be good by Paul Buchheit
Two ways to hold entrepreneurs accountable by Eric Ries

And as a bonus, below are the books that I’ve found to be the most helpful.

Crossing the Chasm by Geoffrey Moore
The Art of the Start by Guy Kawasaki
Built to Last by Jim Collins
Web Analytics: An Hour A Day by Avinash Kaushik
Don’t Make Me Think by Steve Krug
What They Don’t Teach You at Harvard Business School by Mark McCormack
Ogilvy on Advertising
by David Ogilvy