I want to know more actually. I want good use cases for it. For me it’s like being given google in 1995. How can I use it - what’s it good for, what’s it bad fo

I want to know more actually. I want good use cases for it. For me it’s like being given google in 1995. How can I use it - what’s it good for, what’s it bad for and how do I formulate good queries?