Choosing physical products is a slightly different process. Again, the strategy here should be to pick things that are relevant to your content, and to the typical reader of your website.
At the same time, they should also be items that are good quality, and that fulfil a real need.
The good news is that there is no reason to make a big upfront investment and take a risk by buying lots of items in bulk. You aren’t going to be looking at a situation where you have a warehouse full of fidget spinners!
That means that you can follow trends, and generally throw everything at the wall to see what sticks.
I do recommend though that you have a range of different products at different price points, in order to cater to every kind of buyer.
BUT also remember that you make commission on anything that is bought after the user visits Amazon. That means that the main priority should be to get the person to click the link and to visit the page – perhaps moreso than selling that specific item!
Get yourself a web host and create your site. Make one new page and place the sales page copy you got on there, along with your affiliate link. You now have everything in place in order to start selling and start making profit!