I'm a relatively inexperienced web developer just getting my feet wet, and was wondering what libraries the fine people of HN would recommend I check out? E.g. something like Angular or Node that would allow me to build more powerful web apps in more intuitive ways than the standard 'barebones' HTML/CSS/JS mix.

Would preferably like to hear about those libraries/frameworks on the 'bleeding' edge / that are 'up and coming'.

Thanks!