Hi Krishna,
Under section 80C, you can invest ₹1,00,000 (PF employee's contribution also exempted).
Under section 80D, medical insurance - ₹15,000 (if the dependents are non-senior citizens) and ₹20,000 (if the dependents are senior citizens).
You can claim your HRA under section 10. In case you are staying in your own house, then fill form 10BA where you can get an exemption of up to ₹3,000 per month.
In case of any housing loans, you can reduce your tax based on the split up of principal and interest components.
Cheers,
Dev :)