Well, if you are ready for a few nights digging through docs, you could start using Angular right here and now - no need for fancy skills! We all grow with our projects, not with learning sites.
If you feel bored and do not really know how to make learning JS fun, maybe you just did not use the right approach to learning. I always recommend to learn with a project of your choice. Something you really want to create. Maybe your dream project? Alternatively, someone posted a
link here on Hashnode
about the
MMO game Screeps
, which is basically a game that makes you program your little workers' behavior to do stuff rather than controlling them directly.