password/email addresses & administrator function

password/email addresses & administrator function

I have 2 questions:

1) Can I change my role from Administrator to Standard and allow someone else to become the Administrator?  

2) I recently added a new user whom I wish to allow access to view data only.  How do I define their email address and password?  I can figure out how to assign them a new password and re-define their email address.

Please help.