Oh dear, I won't even comment on the course or dropshipping as I think enough has been said. I couldn't bring myself to read all of the posts so I don't know if this has been said, but as you asked how to optimize traffic to your listings when you don't have a store:
If you list auction rather than buy-it-now your items will eventually work their way to the top of searches as they approach end date.
You can use a few auctions as loss leads to encourage buyers to look at your other listings. In your listings you can add a link that takes the buyers to a list of your other items.
You can build a website and advertise it to your buyers, plus on your website you can advertise your current eBay auctions.
However, at the end of the day, if the demand for what you sell is greater than the supply buyers will look for and find your listings. Do your homework on the items you are selling. There is no point listing items that are in huge supply already as you get caught up in a price war.
Avoid driving traffic to listings that are not likely to convert to sales. If everyone looks but nobody buys it can have a negative effect on your position in search results.
My advice is NEVER list cheaper than your competitors. Price match certainly but don't start a price war because down the track you will regret it. Treat your competitors with respect and they will hopefully do the same.
Good luck 🙂
