This tutorials are only for Mozila Firefox. If you don't have a firefox - you can download it here.
Step One: To block your ads when viewing facebook you need to install Adblock addon. You can dowload this here:
Step Two: Ad Filter to Adblock - for example English.
Adblock Plus "by itself" doesn't do anything. It can see everything a web page attempts to load but it doesn't know whether this attempt should be blocked. And that's what you need filters for — filters will tell Adblock Plus what should be blocked. Usually, you won't create filters yourself, instead you will add a filter subscription that is maintained by somebody else.
And that is all to it.
If you have a problems you can view video tutorials here