Your Rewards & Points can be managed at the My Account page.

The number of points you can earn per individual product can be seen on that product's page, like this example:

When you purchase that product, the indicated number of points will be added to the total that you've accrued.

You can see how many points you've accrued by logging into your account and looking under the "My Rewards" section. To see a detailed list rewards earned, click on the "View Details" link:

You can redeem products by clicking the "Redeem" link:

A list of products that are available to redeem will display. If you have accrued a number of points equal to or greater than the number of points listed under the product on the Redeem page, then you may redeem the number of points indicated to receive that product for free!* Just click on the "Redeem" link underneath the product you would like to redeem.

Any points left over after redeeming a product will be saved to your account and may be used to redeem additional products (when enough additional points have been saved up).