Just getting started and need assitance Please

I have successfully installed the AsteriskNow 1.7.1 x86_64 with FreePBX ISO image.

I figured out that the default login is admin admin. I have added a new user and changed the admin password.

I need someone to tell me what the default Security Code is for the Panel and how to change this.

I also need someone to explain how I change the default Asterisk Manager password. I recieve a message on the admin page the the default Asterisk Manager Password was used

Is there any install guide out there that explains the best was to configure Asterisk with FreePBX?

I appreciate any help and thank you in advance.

Best regards,

Joe Coyle