Advises on the Housing Loan Prinicipal and Interest Payment for IT declaration

Respected members,

Please advise about the deduction under 80c and chapter VI- A for housing loan payment and interest paid for this year. I recently purchased plot under government housing board with installments monthly and will that be eligible for income tax deduction benefits?

Also how much I can fill under this category for 80c and chapter vi-a housing loans related slab and what are the documents that I need to submit in order to apply under this section?

I sincerely appreciate if anyone of you can enlighten me with your inputs and advises.