Growth.Design Case Studies - Product tips… in a comic book format
Zendesk - Zendesk is a beautiful, lightweight help-desk solution.
Case Study Club - Learn how people design digital products
Freshdesk - Freshdesk is a cloud-based customer support software that lets you support customers through traditional channels like phone and email, social channels like Facebook and Twitter, and your own branded community
Zero to Marketing - Short case studies that help you get better at marketing
HelpScout - Help Scout is a simple, straightforward way to provide excellent support