Traveling to Pondicherry for 2 days!?

I will be visiting Pondicherry for 2 days (Sat and Sun). Please suggest me the best places to visit like Church, Monuments, Beach & little shopping. I want a hotel near to the beach (cheap and best) and which is the best local transport? Can we get bikes for rent? How much do they charge for a taxi? Please help me. Many thanks in advance.