How do i get started ? I design ui in sketch but would love to make protoypes using JFramer JS?
Welcome to the community Emilio! A great place to start is here: http://framerjs.com/learn/basics/. It gives an explanation on how to import your files from Sketch into Framer, along with how to start tinkering with it. Let us know if this was helpful for you. As always, we are here to help if you need some further suggestions!
Emilio Iantorno Anytime!