It's not 2020 yet, but Ben Werdmüller shares great advice of how to blog in 2020. It's a great article for everyone thinking about starting a blog. He tells which platform to use and how to get into writing.
Here's what [Blogging is] not: professional article writing. If you want to go through multiple rounds of editing, please do. If you want to write two thousand word epics about your topic of choice, please do. But it's also okay to write up a hundred quick words and post them without thinking twice about it.
I personally love blogging, because it's the best way (for me) to share all kind of thoughts: learnings, cool stuff I found, questions I think about, … Sometimes it's even a kind of public journal.