This is a list of highly recommended olympic weightlifting blogs and sites that i enjoy reading.

Catalyst has always been a great source of information, and they post a lot of good articles regularly.
http://www.catalystathletics.com

A bit more technical, but very, very good.
http://yashathoughts.com/

Pendlay's blog is more stream of consciousness and thoughts about various things in weightlifting, a very useful look in the mind of a top weightlifting coach in America.
https://glennpendlay.wordpress.com

I shouldn't need to recommend hookgrip, but just in case...
https://www.youtube.com/user/hookgrip
https://www.instagram.com/hookgrip/?hl=en