First, I'll refer you to the help page for our affiliate system:
...and this help page for affiliates which explains the system from their perspective:
Typically, you would post your affiliate sign-up link to your own Web site, so buyers who are impressed with your product could become affiliates to help you promote it. You can also add a listing for your products to the E-junkie Marketplace, which would allow existing affiliates using E-junkie's system to find you by searching through affiliate programs in the Marketplace. This page explains how to add Marketplace listings for your products:
If you want to make things as simple, easy and flexible as possible for your affiliates, you could just set up a common affiliate program in Seller Admin > Affiliate Program Settings. This would grant the same commission percentage for all your products across-the-board, and each affiliate would have just one, easy Common Hop Link to obtain, so there'd be no confusion or indecision as to "which link" they should use, what the differences are, etc.
If you want to give your affiliates a lot of options and different ways they could go about things, then you could also/instead setup product-specific Hop Links and/or Direct Links, but too many choices could confuse affiliates who have limited technical skills even if they're outstanding at sales and marketing. You are expected to provide all tech support your affiliates may require, so the more types of link you offer, the more time you may need to spend explaining the differences to your affiliates. We generally recommend sticking with just the Common Hop Link unless you have a particular need for product-specific links.