Here's a good introductory video to Caribou CMS. Caribou is a web development platform with integrated eCommerce. It's a good platform to consider if you have an inclination to sell digital products, start a membership website or sell subscriptions. Check it out.
Their website is here: http://www.cariboucms.com/
Mike Johnston Author
Mike is the Editor-in-Chief and Founder of CMS Critic. He started CMS Critic in 2008 when he noticed there were no sites offering reviews of the various products in the industry. He has since grown the site to become the #1 resource on the web for CMS reviews and knowledge. He attends most CMS & related technology conferences and speaks regularly. You can contact him here or follow him on Google Plus.