eBay

I purchased an item month ago which I didn't receive yet, and I messaged the seller, he asked me to open a case that '' item not received'' how is that prosses is going to work?

Hello Guys,I am very new to eBay, and I wonder if I could start selling stuff on eBay? I have heard rumors that i have to get feedback as a buyer to start selling is that true? and how can I earn feedback?

this was my first purchase on eBay, I paid for the item the next day I wanted to check the shipping details and the item is no longer on the seller's list. I contacted the seller through eBay and he said he shipped the item already. should I contact ...