There are many blogs and magazines from Umbraco community members writing about Umbraco
Here are some popular ones:
Skrift.io
Skrift isn't just "another blog on the internet". They are an online magazine with an ISSN (International Standard Serial Number), which means that as one of their authors, you are officially printed in a publication. Which means you will have great recognition in your field and it may help you land your next contract, client, raise or job.
So have a read of the articles and consider writing for them too.
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 favourite 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.
You can also write for 24 days, so have a read through the articles and contact the organisers if you would like to write for them.
Skrift authors at Codegarden
codeshare.co.uk
Codeshare is a blog by me, Paul Seal, where i like to share tips about Umbraco and other web related topics. There are tools on there too such as a strong password generator.
jondjones.com
Jon D Jones is a great source of knowledge about Umbraco and other CMSs. He writes very detailed tutorials to go with his videos.
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.
CornéHoskam.com
Corné Hoskam is a very talented Umbraco Developer and speaker. He likes to share his knowledge and experience in his personal blog.