How to create Facebook application and set it to work?

From today, I start a series of articles on developing applications for Facebook. In each one I will publish useful information and tricks for developing quality Facebook's applications.

In this, which is the first publication from the series, I describe how to create your first application. You will learn the steps, during which you have to pass in order to register it on Facebook.

How to register Facebook application?

The address where you can register the application is http://www.facebook.com/developers/createapp.php
After loading the address, follow these steps:

1. Enter the name of your application;
2. Learn more about "Facebook Terms and Conditions";
3. Accept the terms of Facebook;
4. Clicking the button and create your first application;

Now you will be redirected to the security check page, and will see a "Security Check" box. Thus Facebook prevents attacks against its systems. To continue, you have to enter the characters in the box located just below them.

Congratulations, your first Facebook application was created! :)
It followed several basic settings, which are needed it to work properly.

How to make your Facebook application to work?

Now you have to fill several important fields with data to give life to your application.
Click the tab "Web Site". Fill in the field "Site URL". This is the domain where your application is hosted. It must end with '/'. Then fill the field "Site Domain".

The next step is integrating the application with the system. Click on the tab "Facebook Integration".
Fill in the "Canvas Page". This is the address on which will be available your application.
Set "Convas URL". This is the address of your script. Facebook communicates with the script, and draws data from it. The address must end with "/". More information can be found here.
http://developers.facebook.com/docs/guides/canvas/

Press the button "Save Changes" and you will complete the basic settings of your Facebook application. This is enough for normal work on it. And now follow the most interesting part ... its development. :)