In brief I can tell you that the course which is four year duration after 12th Std, gives a lot of training both in theory and in practicals dealing with all aspects of electronics, tele communication which is telephone,radio, tv, satelite computers etc.Today what ever you are using gadgets are all linked to electronics and study of them gives an in depth knowledge on all these topics. For this you should have very good marks in subjects like Maths, Physics and chemistry with engineering drawing as your subjects in 12th std.If you did not take Drawing as a subject in 12th, No problem but getting very good marks especially in Maths and Physics is very important. Then you have to clear entrance tests as per your interest. If you are weak in maths then improve if you want to study this course.