What should I learn if I want to develop single page application that reloads without refresh new data from database?

There are a lot choices out there, and I'm thinking about learning angular.js because it seems to have a lot of tutorials and learning material.

For someone like me who is not a coder and just started dabbling in this stuff, can you please tell me how to proceed? Any tips/wisdom would be appreciated.

Thanks

please don't downvote. I am honestly trying to learn