You can also link another way using Links and Get Links.
I tend to use Deep Links as I know exactly where I want my readers to land and I can get there quickly using this method.
However you link it is your choice.
Get Links opens the drop down box of your Advertisers for your selection. Once the selection is made you can find the various links as below.
As you can see for my Advertiser there are three types.
You can pick individual products here but I find deep linking easier and quicker because I know what I want and therefore am not browsing so can burrow down to the item quickly.
Text/email are set links and Individual Products has thousands of links. If you do use this click on the blue number first, let it download and then click the categories on that screen to fine tune your choice. If you click the categories on the first screen the whole lot still downloads so there is no point in doing this.
When you find your item the code is there. Copy and then paste it into your post or blog as per the above directions.