Hashnode - One of my general sources of information and communication these days.
Medium - tons of articles about different topics, from self-development to coding.
Twitter - Although not that active on Twitter, I found that the site can still be used for learning and sharing. You just have to follow the right people.
StackOverflow - My everyday reference website. In times of need and despare, I always end up using it.
Quora - A QaA website that's I use to relax and learn something new about different programming and non-programming topics.
Github - The largest code repository in the worlds, with millions of awesome project to explore and learn from. Great source of inspiration.
Product Hunt - Another great source of inspiration. I visit the website two-three times a week to see the best of the new software and hardware products.
Pluralsight and egghead.io - I'm combing the two sites as one, because they serve the same purpose - to watch and learn technical material wherever and whenever I want. Both have great mobile support, so I watch the videos on the go.