The Wakelet browser extension is a great way to quickly grab the links from your favourite site and add them directly into a collection without manually adding them.
To get started, download the browser extension for the web:
To install the extension for Chrome, [click here]
To install the extension for Firefox, [click here].
Once you've downloaded the browser extension, a 'W' button will appear in the top bar of your browser. If it doesn't, make sure it's enabled in your browser's extensions menu.
Then, when you're on the page you want to save, click the 'W' button. If you're not logged into Wakelet it will ask you to log in. Then you can save the page directly to your bookmarks, into an existing collection or into a new collection.