Pocket is built into the Firefox browser, allowing you to save a variety of content (such as blogs, news sources, web pages and videos) to one place with the click of a button so that you can access it later from any device.
To get started, sign up for a free Pocket account. You can even use your existing Firefox Account to sign up. After you create your new Pocket account, you can install Pocket on your devices and add it to your Firefox browser. When you add it to your Firefox browser, you will always have access to it from your Firefox toolbar so that you can manage your content.
For additional information, see Pocket for Firefox FAQ.