Diploma in Electrical Engineering 

at Sunaina Sanskrit Mahavidalaya, Solan

The subject that is tough for you might be very easy to study and grasp for your friend, who finds it interesting. For example, you may find Electromagnetic Wave Theory very tough because of the various technicalities and Engineering theory that it deals with. But, for your friend, it might be fun to learn, as it gives them a channel to learn, explore, and experiment with something new.