For SaaS startups I found this post by David Skok to be very informative and comprehensive http://www.forentrepreneurs.com/saas-metrics/ http://www.forentrepren

For SaaS startups I found this post by David Skok to be very informative and comprehensive http://www.forentrepreneurs.com/saas-metrics/ http://www.forentrepreneurs.com/saas-metrics/ . It is a bit old now but is still very relevant. Author talks about David Skok in the article too. Edit: Added ref to David Skok