Is it allowed to redirect to vendor sales page with your affiliate link once people opt in Adwords or Facebook. I mean squeeze page will be on a different domain and vendor sales page will be different. Please confirm.Go the the vendor affiliate section and save all of the content he provides to affiliates to your computer. If he has a free report you can give away you're ready to get started. If he only offers a couple of articles or even swipes grab these and throw them inside a nice looking report you could give away in exchange for an email address. Now create a super simple squeeze page to give your report away, and setup an Adwords account with all of the product's competitor keywords (product names in this same category). Once people optin to your list forward them immediately to the product page with your affiliate link (do this through your autoresponder, single optin with redirect).
You can use this simple 2-step funnel with Facebook as well. If you do make sure to start with $5 ads and slowly build from there.
Hope that helps!