In the beginning of 2019, I felt overwhelmed with information overload across Twitter, HN, and the dozen or so newsletters I subscribed to.
I ended up unsubscribing from just about everything and now follow a handful of great curators instead. It's probably the best thing I did last year to find more signal online.
My favorite is Stew's Letter: https://stewfortier.com/subscribe
It's a short email that comes out every week or so and includes a funny/entertaining collection of ideas across a broad range of topics (AI, communication skills, evolutionary biology, etc.).
David Perell sends out a similar email that I also enjoy: https://www.perell.com/newsletter