1.Always look at your paypal NOT ebay to see your item is actually PAID.
2.Always look that paypal saysK TO SHIP.
3.ALWAYS ship to the address on PAYPAL if the buyer wants you to ship to another 1 then tell them you will cancell the invoice and they can add that Other address to their paypal and then you resend the invoice.
4.Never give partuals unless they PROVE damage like a picture.
5. when a buyer pays leave feedback when you ship.
I'm a newbie, too, and recently posted my issue under the subject of "Flummoxed".
Your answer to "queen...." was excellent and I was especially interested in #3. Can you tell me how to void and re-issue an invoice after the buyer changed a ship to address? The buyer paid for the item and somehow managed to say they were offered free shipping although the original ad clearly stated shipping would be by Priority.