Polytechnic

If you have completed you engineering Diploma course then your first priority should be finding a suitable job. State PWD and Irrigation, Railway, PSUs and Private sectors are the major recruiters. The B.Tech Lateral or Part time regular courses are the other options for higher studies.

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Yes you can do the PGDITM course of SCDL Pune. The eligibility criteria and other details are given below.
Eligibility criteria : Bachelor degree holder / Graduate in any discipline from a recognized University.
Course duration : Two years
Course fee : Rs 46000/+1000(Application fee)
Fore more details please visit http://www.scdl.net/

Yes, you are eligible for admission directly in second year in the respective branch. In some of the colleges, eligibility criteria depends upon your percentage.