Why can I not find my account in the user list?  

Administrators can not edit their own Accounts using the User Edit page, http://www.hrclassroom.com/Admin/Form/Useredit.aspx 

Only Trainee Accounts can be edited from the User Edit page. One way to manage this is to create and use an email alias for the Administrator account. For example, if your official company email is [email protected], it may make sense to use a working alias such as [email protected] for your admin account. In this way you can have a test account, or training account, that appears as a regular Trainee.