When your trying to implement a new feature(say a module or theme) in your local machine for a website, first thing you have to test is the compatability in all browsers. If you want to test your feature in multiple machines, its not always easy to download and setup on each machine. In my case, I am using Ubuntu and I have to always test compatability of a site in IE browsers which cannot be installed in ubuntu. So what I did here is created a virtual host for my site in my local machine and using my ip address I created a virtual host in other machines so that I could easily access all my sites in my local machine from diffrent machines.
Local Site
In the cases of multi-stage form it is necessary to add a Back button to the forms to navigate to the previous forms. By limiting the validation errors for a submit button, we can skip the form validation for that submit button.
Consider that you are working on a Drupal website. It is not possible to work on the live website because it will result in crashing of the site if we make some mistake. So the best way to avoid this problem is by setting up the same site in the local machine and after that working on it. The following steps have to be performed if you want to setup a Drupal site in your local machine.