Each Contact has their own unique login for the Online Ordering site
The Email Address you set up is the address they will use to login. They can choose to create a password for themselves on the Online Ordering site or you can set a password for them.
The Contact Notes are very helpful for relationship building by recording small pieces of information you pick up in conversation. For example, if one of your Contacts is a big Denver Broncos fan, you can note this down and this helps you pick up the conversation with the Contact on the next occasion you speak.