You can register online or by phone or by mail. The detailed information about registering for the GRE can be found at www.yocket.in
Extracurriculars are always an add-on to your profile. Any achievements at the state or national and international level are considered important. Working for social causes such as for an NGO or charity trusts on a regular basis
The University of Massachusetts at Amherst is a public research university, and is the flagship university of the UMass system. It’s also the largest public university in New England (which is a region in northwestern corner of USA comprising of 6 states). It’s a quite highly rated university, and its program in Computer Engineering is to die (or kill) for, which is why most Computer students aim for it. It ranks #119 according to U.S. News' 'Best Global Universities Ranking' list.