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
You've worked hard all through and these documents would be your chance to show it to your prospective univs. Make the best out of it. Share your views, ideas and tips for everyone on the community.