Accounts Receivable

A/R Experts,

We will be implementing A/R in my company, we are still not sure if we will be implementing SD yet. But if we only implement teh A/R module is tehre a way that I can enter products being sold and quantity? do I need SD for this? I tried reading teh documentation in SAP but it really just gives me genral info. I am looking for a document that gives me detail information of what i can with teh A/R module.

Can anyone help?