i am in btech 1st sem.i want to prepare for gre from right now.i don,t know very much about gre.Now tell me how can i start my preparation

Hi, GRE is test which need to be taken by students who wish to pursue MS in engineering and related fields, now a days there are many universities which accepts GRE scores for admission in MBA as well. GRE scores are accepted in universities of: USA. Canada. Germany. Singapore and many more count