Diploma

This is a personal choice. Understand what you like to study, what you want to do in terms of job and decide. Electronics, VLSI, Power Engineering, Chip Technology, CSE, IT etc. are some topics, you can choose to specialize.

After passing Diploma, you can do AMIE (the only option for Diploma pass students engaged in a job) in any branch of your choice. See AMIE details on this link:
http://www.amiestudycircle.com.

For D.Ed, you need to be 10+2 pass. D.Ed is a Diploma programe in education. So after your Diploma, you would not be eligible for D.Ed.

You are eligible for B.Tech marine engineering as a lateral entry into the 2nd year. Please contact admission team for more details. Contact no.: 02114399500/16/17/08.

Yes sure, why not. Take admission, work hard, improve your vocabulary, everything will be simple afterwards. All the best.

Hi Nisar,
Masters programs are research based and in-depth study. PG Diplomas are accelerated programs somewhat compared to Masters. Decide what you want to study, research oriented or accelerated practical based programme and decide. Memorial University of New Found land, Dalhousie University, Georgian College, Fanshawe College, University of Toronto etc. Are some universities and colleges which you can search.