The core of famous is really an request animation frame loop that does css transitions to do animations with physics. Their demos uses absolute positioning on everything to get flickerfree animations. On top of that they've created various abstractions like angular directives and react components. It's very cool, but for simple animations in react or angular I turn to snabbt.js.
There are some open source projects that adds turn key components to famous, like famous-flex https://github.com/IjzerenHein/famous-flex by Hein Rutjes. If you want demo's, then there's the famous "fan site" http://famousco.de/links/