For taking best facilities from Facebook, users need to be registered member in Facebook. Registration is very easy and safe. For registration in Facebook, you can use Facebook application and Facebook website. From the both cases, you will a get a Sign up form and you have to fill up the form. On the form, you have to put first name, last name, email address or mobile, password and click on the Sign up button. Now you have to confirm the account. This is why, you have to verify the email or the mobile number. Once your account is verified, you should complete rest of the profile and add profile picture. You can use Facebook application for connected with friends all the time. You can use Messenger application for chatting by voice and video. Those applications are distributed for free.
With registered email ID and password, you can log in Facebook site or the Facebook application. With the same log in detail, you can log in messenger application. Now you can use Facebook properly. You will add friends to increase the relation. If you have forgot the log in detail, then you can retrieve the log in detail from the same page or by the application.