Antonio Ramirez has shared a guide how to add FontAwesome via Composer in Yii2 project as Asset Bundle.
Note
In Google Chrome you can open Dev Tools for Dev Tools. Open it in separate window and then Ctrl + Shift + J.
at MobiDev (Kharkiv, Ukraine)
Code in Ruby and Elixir, but still love PHP. Explore ES6 and Vue.js. Explore databases, use Ubuntu and MacOS, think about IT people and management
Notes
Semantic UI - a toolkit for web UI with semantic layout. Actually looks more semantic and clear (in terms of HTML code) than Bootstrap.
Hand-picked registry of Node.js frameworks. Makes you a suggestion for mature framework to start with a little easier (according to specific of your needs).
PuPHPet - simple GUI to set up virtual machines Vagrant + Puppet for Web development.
Mobile-Detect - a lightweight PHP class for detecting mobile devices. Works like $detect->isMobile() etc., very handy for choosing a frontend rendering strategy based on this info.