If you’re the vendor, then you create your own product and set it up using Clickbank’s system. They then list your product in their marketplace so that tens of thousands of affiliates can see you. They handle the tracking using unique tracking links and cookies so they know exactly where the sale came from and credit the referring account accordingly.
The toughest thing for someone getting started is figuring out what to sell, whether they are a product creator or affiliate. It would be great if Clickbank spent some time showing websites and products that are doing a good job. I understand this can be tough, since many product and website creators don't want their hard work copied by a bunch of students! However, examples of successful entrepreneurs doing the same thing you're doing would be good for inspiration.
5. Fiverr – Fiverr is a great place to make a few bucks or spend a few bucks if you need some of the services people offer. Basically, everything is $5. You either pay $5 or charge $5. They call them “gigs.” You can offer your services however you choose. If you sell art and you’re fine selling pieces for $5 each, that’s a gig. If you’re a graphic designer and you want to offer your services for $10/hour, simply offer a 30 minute gig. If they need two hours of graphic design, they pay you $20, or $10/hour by buying four gigs.