Write the next sentence in this paragraph:

How to get free products from amazon for review
Get familiar with the terms and features you'll be using.
This is the string of characters immediately after the "/dp/" in the product url.
This is how to identify a product.

Options are: --You can also search for a product using this. Understand what a product asin is.; --A product that is free from amazon will have your name only and your date of purchase in parenthesis next to the name. A product that is free from amazon.com will have your contact information at the top.; --For example, review browsing apps that are programmed to recognize the types of items you're purchasing. Note this information before you launch the app.; --Terms and features you've probably heard of. A description can give you a way to get quality reviews.;
You can also search for a product using this. Understand what a product asin is.