Drupal Multi-site
How to configure a Drupal multisite setup
One of the core features of Drupal is the ability to run a multisite setup. That means that you can run multiple websites from the same code base. The advantage is that is makes upgrading the core and contributed modules a lot easier and faster, as you just have to upgrade once, rather than multiple times.
Learn how to write custom Drupal modules
Does Drupal module development make your head explode and drive you crazy?
Why not learn from someone who has paved the way instead?
Sign up to Master Drupal 7 Module Development.
I am 