To be honest - nothing difficult !
Affiliate Base - here on our Blog : https://affbank.com/blog/how-to-start-in-affiliate-marketing-an-easy-step-by-step-guide
About running offers via Facebook page. You can do it, but there are some tips about it. We also have an article about : https://affbank.com/blog/how-to-monetize-facebook-traffic
Anyway, after choosing offer, contact Network support and ask them the conditions of running their offers.
Hope that helps.