Microsoft Dynamics crm 2013

Hai dudes,

 May I know how to import products in Microsoft Dynamics crm 2013. while I am trying to import Products same as like invoice but its showing error while i am importing products in Microsoft dynamics crm 2013.Then what is parent product , and Bundle in Microsoft Dynamics crm 2013. Then how to make a phone to the particular contact through crm 2013?

 Thanks....