tsure on "How do I change my password?"

I can't find anywhere on the WP site where I can change the bizarre paswrord that was set up for me automatically

Hi,

Sorry for the inconvenience, but you may want to reset your password by any one of the methods listed in the link below:

https://codex.wordpress.org/Resetting_Your_Password

I would suggest starting with the simplest way via the Admin Panel.

Thanks,
Tanveer