Working with Formulas

Hello Everyone,

I want to know some Formula for the following Example

I have a Report for 9thoct,2013 ie;My Sale Date.

Now 1: i want to see the report from Month to Date ie:1st oct to 9th oct,

         2: i want to see the report from Quarter to date ie: for july,aug,sept,oct. ie: 1st july to 9th oct

         3: i want to see the report from Year to Date ie: from 1st Jan to 9th oct

For the above condition i have to create the variable? and what are the relative formulas to do so? Please reply its Urgent.

Thanks & Regards,

Foram Shah