Drupal 7.x

I need to alter the urls in this way:
http://mysite.com/users/foo -> http://example.com/users/foo

Following the documentation for D7 I have found hook_url_outbound_alter, that I have implemented as following: the hook is invoked but it doesn't rewrite the urls.

Hi all,
Can anyone tell me, how can i integrate a html as a drupal theme.
Let say, i have a html template, i want to make it drupal supported template or theme. How can i make it?
It should be drupal 7 supported.

I've been going about creating content. Now my question is where the hell is my content that I just created? I can't seem to find it on the hard drive anywhere around /var/www/html... where is should be but maybe I have not looked in the right place yet. Does anyone know where the content resides? Thanks.

I need to build a site with multiple levels of permissions. I have 4 groups Administrators, National, State and Clubs.

I need to allow each club to create/edit their own content.
I need to allow each state to create/edit their own content and also edit content for clubs which are in their state.
I need to allow National to create/edit their own content, edit content for all states and clubs.
Administrators have access to configuration setting and edit all content in the site.

Please let me know if I can set the site up to do this?

Why doesn't work ajax event for tableselect?

I'm new to Drupal 7, is there anyone knows how can i create dependent hierarchical select list for country, city, region as a field?