There are many blogs and magazines from Umbraco community members writing about Umbraco
Here are some popular ones:
Skrift.io
A monthly magazine for sharing knowledge in the Umbraco Community.
Skrift authors at Codegarden
24 days in Umbraco
The 24 Days In Umbraco Christmas Calendar. It started in December 2012, where they asked a bunch of Umbraco people if they had a favorite feature, a story or something else that they'd be willing to write a short article about. The 24 days team now post a new one on the site everyday through December.
codeshare.co.uk
Web developer blog by Paul Seal with code examples and thoughts on technology such as Umbraco, MVC and ASP.NET and JavaScript.
johndjones.com
A vast amount of blog posts and tutorials about Umbraco and many other web development topics.
zpqrtbnk.net
Bonjour ! I am Stephan aka ZpqrtBnk. I scratch software itches. And beyond. I see what's CompletelyBroken™. I love to fix, improve, and make things happen. I code, speak and listen, learn, and help people with their architectures and projects.
Owain.codes
Owain's Umbraco Community thoughts, coding tutorials, what he is learning, general blogs about his experience with Umbraco and any other things that come to mind.
too orangey for crows
Marc Goodson's blog. Marc works for the popular Umbraco Gold Partner Moriyama, where he is the Lead Umbracologist in the Umbracology Department.
LeeKelleher.com
One half of UMCO, the awesome Umbraco package creators. This is Lee's personal blog.