I watch craigslist hunter on youtube all the time. He provides down to earth information on selling, especially ebay.
I listened to this one and I found it especially useful. He talks about the time to list an item properly, about 20 minutes which includes photo's etc. He also talks about minimum profit and not to waste your time on $1 to $2 items, to make a few bucks profit (I felt he was talking directly to me, LOL). Now I have most of my stock, just will be more selective in purchasing for the future.
https://www.youtube.com/watch?v=XMZpVoB3vm0