1) Hashnode.com
2) Stackoverflow.com (Sections: Web Applications, Server Fault, Webmasters, etc)
3) Pluralsight.com
4) MSDN (I.e., channel9.msdn.com)
5) Reddit.com (mostly /web_dev and frontpage)
6) Htmlreference.io & Cssreference.io
7) Twitter.com (Catch numerous individual thought-leader posts)
8) Youtube.com (Subbed channels or I go down rabbit hole of related videos)
9) C-SharpCorner.com
10) Forums.Asp.net