The way, how I try to understand the purpose of any framework is to use it and compare with the already implemented no-framework solution.
Sure, most of us, at first hear about a new library from tech media portals or from tech-dev influencers or from conferences/meetups or from coworkers, etc. then we are going to check out the source of it whether it is a software or open-source product. In the end, we are playing with it and trying to apply it to the existing product.
I’m based in Berlin.