How to make a monthly, daily and weekly report using reporting services ?

HI msdn people.

I'm developing a Point of Sales app for some cliente, the main app is done, I dealing with the reports.

I'm Junnior developer, and I don't know how to make a daily, weekly and monthly report. I'm using C# for main language, is a Windows Form application, I really appreciate all your help guys, and I keep searhing for more info.