The following are some useful links to some sites and resources that will aid you further in your quest to learn more about Ionic:
The Ionic framework: http://www.ionicframework.com
The Ionic GitHub: http://www.github.com/driftyco/ionic
AngularJS: http://www.angularjs.org
Ionic stack overflow: http://stackoverflow.com/questions/tagged/ionic-framework
Firebase: http://www.firebase.com
NodeJS: http://www.nodejs.org
Bower: http://www.bower.io
Gulp: http://www.gulpjs.com
Cordova: https://cordova.apache.org
Ionic market: https://market.ionic.io
ngCordova: http://ngcordova.com
Ionic jobs: http://jobs.ionic.io
Ionic showcase: http://showcase.ionicframework.com
Ionic lab: http://lab.ionic.io