if you haven't earned income during the period, then there is no need to pay income tax.

you can get the details here: http://www.investmentyogi.com/investing/important-income-tax-acts-for-saving-tax.aspx

http://www.investmentyogi.com/save-to-crorepati-calculator.aspx

If you are expecting refund for FY 2011-12, then you would get an intimation from ITD through Email once the processing is completed, usually by Feb 2013-end for high ticket refunds.

you can check out Apollo Munich Easy Health Policy.

You need to file a rectification return. You can file it by making changes to the existing original return and then generating new ITR-V and mailing it by speed post to CPC, Bangalore.

No. You would be eligible for deduction of maximum INR 5,000 per annum under Section 80D

you need to e file ITR1 again as you did previously.. make the interest inclusion and upload your ITR1 and generate new ITR-V and send to C PC -Bangalore

You can start SIP in large-cap equity mutual fund schemes. However, they are suitable for an investment period of +5years. http://www.investmentyogi.com/planning/top-large-cap-funds-in-2012.aspx

Yes, employee's contribution, employer's contribution will be taxed. Interest on employee and employer's contribution will be taxed too.