Brandon wants to sell some things on eBay and he's never done it. There may be an age issue for Brandon, though. He'll have to be over 13 to sell on eBay per the US Online Privacy Protection Act, which requires protections for children under 13. Even then, he'd have to have verifiable parental consent. Plus, he also has to have a credit card on file, so realistically he'd have to be 18.
Brandon won't be able set up an eBay account on his own, but his parents can. There's some tricks of the trade though, like how to describe the item fairly and accurate, how to take good pictures of your item, etc.
Leo also wants Brandon to go to Alice.org and download Alice so he can learn to program.