There is several ways to link. I will start with finding your advertisers and then using DEEP LINKS.

Finding your advertiser gets all the ones you signed up with and eliminates the others from your list.

Deep Links are great because you can pinpoint the exact location you want. Other links could require a number of drill down steps for your traffic to do to get that location.

Select the advertiser you want from the drop down list. By selecting My Advertisers this removes all the affiliates you are not signed up with and unclutters your list.

Once your advertiser is selected you need to go to Links and Deep Links.

From here you can browse their site selecting the item you are interested in linking to. If there is more than one category with that item select your choice.