Explanation need about tds

Dear sir/ma'am,

          I would like to know the TDS filing and returns, so could you please brief me about it with a relevant example please. If it is in the point of person and also in the point of firm (Ltd, Proprietaty etc) As I am working in financial sector and I am going to take up a responsibility to fill TDS and Returns. If you can give me clear explanation I can go through that easily.

Thanking you.

Krish..