Useful Links

Tools

Can I use? – Shows browser compliance for popular HTML5 features.
JsFiddle – Write and test javascript snippets in the browser.
DotNetFiddle – Write and test .NET snippets in the browser.
SQL Format – Format your SQL statements easily.
RegEx Pal – Test regular expressions
.NET Reference Source
SQLFiddle – Test T-SQL snippets in the browser.
Mockaroo – Very flexible and robust mock data generator.

Blogs

The Morning Brew – daily curated .NET development links
Scott Hanselman
Sitecore Community
Sitefinity Community
High Scalability reports on infrastructure choices for large web apps.
HTML5 Rocks
Smashing Magazine – CSS, JS, Design
Scott Guthrie
Dan Wahlin – AngularJS, .NET
MSDN Magazine
K Scott Allen

Video

Channel 9 – recorded tech conferences and session videos from Microsoft.
InfoQ – Curated list of video presentations on technical topics.
Microsoft Virtual Academy
Azure Friday

Podcasts

.NET Rocks
This Developer’s Life
Hello World Podcast
Herding Code
Hanselminutes