jQuery documentation: https://api.jquery.com/
Twitter Bootstrap 3: http://getbootstrap.com
About arrays: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array
w3schools: www.w3schools.com
Firebase: https://www.firebase.com/
Firebase chat tutorial: https://www.firebase.com/tutorial/#tutorial/basic/0
source code for chat application using jQuery and Firebase: https://github.com/jasonshark/tutorial-firebase/tree/master/basic-chat
firebase chat demo: https://jasonsharkdemo.firebaseapp.com/
Install Jekyll on windows: https://github.com/juthilo/run-jekyll-on-windows/
Node.js (for JS on server side): www.nodejs.org
Google maps getting started: https://developers.google.com/maps/documentation/javascript/tutorial
Leaflet.js (JS mapping library): http://leafletjs.com/examples/quick-start.html