plugin for affiliate blogger

Hello guys,

greetings from Vancouver. I have a question about affiliate coupons for bloggers.

I am launching a blog/online tv. Once I gather enough viewers (hopefully), I would like to become an affiliate for small independent artisans who make products that are related to my blog’s focus. I would like to have discount coupons on my website, on which people could click and be connected directly with artisan’s online store’s where they could apply the coupon and purchase the product. But my question is:

1) how to set something like this up? Would these selected artisans have to join some kind of affiliate programs? or can the transaction be done just between me and them somehow?

2) is there any plugin that you guys could recommend, that would create clickable coupons which would lead directly to the product on selected artisan’s online store?

Thank you so much for any tip or advise.

Paul