Your affiliate link:
Use that link for sending people to the homepage of the Product
Your affiliate order link:
Use that link for sending people directly to the order page.
How to direct people to ANY page:
Just add this to your affiliate link
#{affparam}
Example:
If you wanted to suggest a specific page
like http://yourserver.info/pagehere.html
your affiliate link would be http://yourserver.info/pagehere.html?#{affparam}