Google Analytics basics

https://developers.google.com/analytics/resources/concepts/gaConceptsTrackingOverview#gifRequestClassification

https://developers.google.com/analytics/devguides/collection/analyticsjs/#what_data_does_the_tracking_snippet_capture

JEE Security article

http://docs.oracle.com/cd/E19798-01/821-1841/bnbwk/index.html

Angular basics article

http://learnangularjs.blogspot.in/2013/03/introduction-to-angularjs.html