Useful Links

Income Tax Department: http://www.incometaxindia.gov.in/
Income Tax Department - E-filing Website: https://incometaxindiaefiling.gov.in/
Know Your Jurisdictionl A.O.: https://incometaxindiaefiling.gov.in/e-Filing/Services/KnowYourJurisdictionLink.html
Income Tax Return Forms: http://incometaxindia.gov.in/download_all.asp
Service Tax Department: http://www.servicetax.gov.in/
Taxmann: http://www.taxmann.com/
Introduction to ERI & Registration Guidelines: https://www.tin-nsdl.com/e-return/ereturn-overview.php
ITR-V Receipt Status: - https://incometaxindiaefiling.gov.in/e-Filing/Services/ITRVStatusLink.html