If you link to Amazon products on your blog a lot, you need the EasyAzon plugin. It will save time and effort by looking up ASINs and formatting the affiliate link for you. With just a few clicks, you have your choice of text or image links set up. This has literally saved me hours of work! I love this plugin so much, I bought the developer rights so I could install it on all my client's sites. I'll give it to you for much less than the original price. (If you buy direct, it's now $47.)
Comes with easy how-to videos to walk you through set-up, and inserting the Amazon affiliate link into your post, plus my assistance if you need it!