Dear Ramu,
you can claim both exemptions and deductions from your income under various sections of the act.
For claiming deductions you can refer to SEc.80C to sEc.80U, however as per sEc.80CCE-"The aggregate amount of deductions under section 80C, section 80CCC and section 80CCD shall not, in any case, exceed one lakh rupees."
Also if your income includes any income from cap. gains, then deductions may be planned acc. to SEc.54 to SEc.54H.
Also SEc.10 provides certain incomes to be excluded in computing the taxable income.
so you can refer these sec.s'
bye