I found lots of HTML5 UI frameworks over there, such as:
I'm kinda overwhelmed with again so much resources out there.
Looked some of them, but almost all seemed like too slow and heavyweight.
I'm getting a bit confused about which one will I learn.
Each of their websites talk about their product as if they were the best on the market. (obvious marketing strategies).
As a beginner on web apps development and client-side JS UI frameworks; you guys, based on your experience which one do you recommend for rapid desktop web apps development considering speed, widget collections, complexity, look n' feel, support, etc?
Which one do you recommend me to start learning?
I know there could be lots of answers and each one could prefer different ones, but this could help to guide me a little and have some critics of some of the most popular frameworks.