Personally, I don't try to keep up. There's too many topics and tons of information in each. I focus on keeping up with topics I care about, topics that help me be productive. If you're a developer, focus on web things. If you're a data person, focus on that.
I couldn't tell you anything about Blockchain or data science. Not that their not interesting. I just had so many other things to focus on but for work and personal projects. My advice is find the things you care about, find the things that you enjoy and focus on that. Get with your friends and let them tell you about their cool projects in other technologies. That way you get the high level from people you know.
It's easy to get into the habit of chasing topics. They'll always be new things to learn. At some point you have to pick something to focus on and go deep into that.