Receipts & deposits

jamiejames

i am new to express accounts, just starting to find my way around it and i just wanted to know what the receipts & deposits payments is to be used for, i enter invocies and when a customer pays i apply customers payment, and i record my business expenses under the purchases part. I am just unsure what i need to use the "receipts & deposits" section for, also i dont understand what the journal entries are to be used for, this might sound like a thick question but i cant find a manual on this software

i would fully appreciate any help ir information anyone could give me

thanks

James