I've recently been working on a web app from the ground up. Bootstrap 3 was a good choice to get started - it is super easy to get a site up and running without having to worry too much about styling. In essence, it allowed me to build out some of the requirements with a wireframe-y front-end.
The last week has been an intense period of training. I've taken up the offer of a project to be built using AngularJS, and so my head has been down in tutorials, books and online docs. Here are some of the resources I found useful.
During my time at Mubaloo I was a vocal supporter of Backbone.js. But recently there has been lots of noise around AngularJS.