First of all, you need to go to the website of Rolling Nexus by typing rollingnexus.com on your URL. After that, you can either log in or sign up through an individual account. Once you have logged in, click on CAT at the middle top and then you will be introduced to its six different categories of tests once it loads. The tests are Rolling Test, Mock Test, Skill Test, Entrance Prep Test, Domain Test, Typing Test. Here you can pick any category depending on your need and interest. These tests help you in testing different skills and general knowledge on various topics and so on.