What is drop shipping?
-selling another factories product for them without holding your own stock of the items. you sell an item you don't own lol. Then take that money and buy it from the factory at its wholesale low price. Giving them your buyers shipping address. You keep the profits you make.
1) get your new ebay, paypal, and email accounts all set up. Separate accounts then used for personal emails or shopping. Keep them business only.
2) what to sell? Don't matter. Everyone wants to sell what they themselves like, and would buy and use them self. But money is money. Products don't matter. Anything is good enough if you got yourself a good profit margin. So this step isn't all to important for beginners.
3) finding wholesale distributors and supply:
You can Google it and find ripoff companies that want you to buy a package or pay a monthly membership. But its a ripoff. They themselves are playing the middleman that YOU should be. Upping the apparent "wholesale" price and hurting your profit and competitive price.
This is the hardest part. Its some footwork calling local distributors and factories asking if you can sell for them on your ebay account. But its the best way to find under-used supply.
If you want this part done online then you could start looking at alibaba website for distributors. Asking companies posted there if you can work with them, or contacting ones seeking drop shippers.
4) when you got your supply. They give you an online login to their catalog. Or mail you one. Wholesale prices for you. Your like a real business now.
(Some of the better distributors or factories will require you have a business tax ID for your "business")
5) sit at your computer in your underwear for 12 hours a day reading and sending emails, messages, feedbacks, answering questions. Or continue to find more distributors and sell even more stuff.
it can become to much work after awhile. So you get friends and brothers involved lol. My mom backed out so she could start her own company doing this. More cut for me.

