Help me Threaddit, you're my only hope! Juki MO 81 Sewing Machines Parts and Sales in Los Angeles

Please forgive me, as i have never posted to Reddit or am aware of things that might be more obvious to a well read redditor.

In my search to fix a home sewing machine today; i ended up purchasing a Juki Industrial Serger, Model 816; Class FF6, all complete set up in a table and ready to go; i have read through the whole manual and watched every youtube video i could find; but my basic problem comes down to that i know absolutely nothing about how to operate this machine. It is on a truck right now on it’s way to me, and i would greatly appreciate it if there were someone who could help me get started with it. Basic things, like; how to turn it on and how to use the double foot pedals. I’ve had a few hours to process what i have done and i am so terribly nervous that i am going to make some terrible mistake. I have searched all over google and cannot find any really good comprehensive resources that teach the very basics.

Thank you, anyone who may be able to help me out or point me towards some tutorials or videos would be so appreciated!