I read a lot of blogs, but one of my most favorite ones are from Tim Urban. The guy would just change the way you think about everything. I would recommend you to read these two blogs by him in which he has discussed everything about ANI (current AI, also called weak AI), AGI (about to be achieved), ASI (still nobody's sure what capabilities it could have, so it is very hypothetical). But once we achieve ASI, it's said it could think on its own, and the AI world would have reached a point of singularity where their intelligence will increase way too much over time and could even create more of themselves or even advance. I mean, this is something more advanced than the human brain, and the scary thing is, from this point, AI might decide its own fate as they no longer need to rely on humans. But the ASI thing is very much hypothetical for now, so not completely sure.