Paul S. Randal is the SQLSkills guy. Want to learn in depth about SQL? check out his training.
Link:
https://www.sqlskills.com/blogs/paul/ Brent Ozar is well known by many DBA's ... he/his team created several great tools.
Link:
https://www.brentozar.com/ Dave Pinal is another well known DBA. I have found many tips and tricks here.
Link:
https://blog.sqlauthority.com/ Mohit Goyal has a very in depth site on powershell, database Ci/CD and more DevOps.
Link:
https://mohitgoyal.co/ ZDNet - News about technology.
Link:
https://www.zdnet.com/