A beginners guide to get your website working with Facebook

Below are 3 steps to :

1. Get Facebook functionality into your website.
2. Have a Facebook application presence for your website.

Step 1 :
Register your website to get an AppID here http://developers.facebook.com/setup/
Receieve your AppID and App secret.
You also get an example page with a login and like plugin, which you can extract and embed into your site.

Step 2 :
Seeing this in action gives you the confidence to move to the next stage. You can go to http://developers.facebook.com/docs/plugins. Here you will see other plugins which can be easily embeded into your site. Some of these plugins are designed to work in co-ordination with the Facebook Page you get with your application ID. This is available through http://www.facebook.com/apps/application.php?id=yourAppID

Step 3 :
You may also access the Social Graph API. Documentation of which resides here http://developers.facebook.com/docs/api. An example being that using https://graph.facebook.com/yourAppID will return JSON data about your application.
If for example, your website uses PHP, you may process this JSON data and represent it on your website.