After you have first installed Drupal, there are a few adjustments that you will make on most sites:
Add your primary administrative user - admin/people/create
The first user account that you created during the install should only be used for site upgrades, and/or an emergency. Create an administrative account for daily work within the site.
- Adjust the allowed tags for the Filtered HTML input format - admin/config/content/formats
- Add any additional roles - admin/people/permissions/roles
- Review permissions for roles - admin/people/permissions