Like: To like any content, select and click the like (thumbs up) button. Like counter increments by one. Click on the like counter will show you who else liked the content.

Comment: To comment any content, select and click the comment icon. The separate window will appear and you can write your comment in the text box. You can also edit your comment if you click the edit button. If you would like to completely remove your comment, click the Remove button.

Pins: To pin any content and let someone know you found something they would be interesting, select and click the pin icon. You can select Private pin visible for you only or Public pin visible for all. All these pins will be available on Pins board in the top right corner in Public or Private section.