being updated in IT

I faced with the relevant question on a job interview last week:

how do you keep yourself updated?

It is a really good question, I already liked this interview because of their technologies and methodologies.

I could not fulfill this question totally, but I promised myself to create a list here:

• Social media posts:
• Linkedin
• Twitter
• Facebook
• Newsletters:
• Java Magazin
• Lerner.co.in
• O'reilly newsletters
• Online courses:
• Coursera
• Udemy
• FutureLearn
• Udacity
• BigDataUniversity from IBM
• DataCamp
• Edx
• Blogs:
• Uncle Bob / Robert C. Martin
• Mykong
• IT news/ community sites:
• Wired
• MIT Technology review
• Agile Connection
• Open group
• TechWell
• Online tests
• HackerRank
• Codility
• Books from amazon
• Meetups

Feel free send me any suggestion!