How to use add ons?

Of course, you can do. Take this steps. 1) Start Firefox 2) Push the button on your right top of the corner 3) Open your addon 4) When you're inside that, you can see in your url bar a tittle same this "moz-extension://**" 5) Then now push the url for 2 sec, you will see an little open menu with the message " Add. at Homepage " press "Add" The benefit can be a lots, depend what do you need for your Android.