Creating a unique tracking ID for an Amazon link is easy. Simply log in to your Amazon affiliate dashboard, click “Account Settings” at the very top on the right, then click “Manage Tracking IDs”. From there you can make a new tracking ID so you can track which web page/campaign sold what. You can learn more about using Amazon’s Tracking IDs here.
One of the challenges I came up against when writing about cameras regularly was that while a certain percentage of my readers were actively shopping for a new camera, many readers already owned one. In fact, writing a ‘photography tips’ blog means you attract more people wanting to learn how to use a camera that they already own, rather than buying a new one.
Yes is the short answer. Any time you are planing on generating money, you should have a plan. No plan means no real focus. There may be some 1/1000 percent of a chance you will succeed, but I haven't met them yet. If you have already started and have generated an income, record how. Doing so will give you material for use in expanding your business faster.
Once you’ve set up your account, do note that Amazon requires you to use product links and generate income from at least three of them within 180 days. If you fail to do so within that time, they will close your account. If you are able to satisfy that requirement, Amazon will review your account as well as your usage of affiliate links once the first sale is complete.