First of all you need to be in your home page

once there, look on the right side and under your profile picture you will see the title Apps, click on it.In this title, this will bring up a list of applications for you to choose from; also you can see the applications that your friends might be using. To get to the selection of applications, go to Apps Directory, now you have the chance to find any applications that Facebook may have. Facebook has many different selections to choose from but if there is a specific topic that you may be looking for, you can easily browse topics like business, entertainment, games, education and even just for fun. The applications will have a picture with stars under it. The stars indicate the ratings of the applications, so the more stars highlighted, the better the ratings and more people who use the application. After you have found an application that you like, click on the picture, this will take you directly to the apps main page. In order to start using the app, you will have to click on go to app and especially do not forget to click the like button. The like button is the tally of how many people use that app.