Here are just some internet things I think are very interesting and/or have had a big influence on me:
Hello Internet – Brady Haran and CGP Grey talk about everything and have very interesting discussions.
Cortex – Mike Hurley and CPG Grey discuss problems and ideas in their life as independent content creators
These Youtube channels help me stay curious and expose me to new ideas of how our world works:
SmarterEveryDay, CGP Grey, Vsauce, Numberphile, Veritasium, MinutePhysics, Kurzgesagt
xkcd.com: Literally thousands of nerdy comics
waitbutwhy.com: Very good and entertaining blogs on anything