Need help with Lowrance HDS 8

I bought a new to me boat and it has Lowrance electronics. HDS 8 at helm and a HDS 9 Touch at the bow. I got Nema, I got the units talking to one another, I have a hd scan box. Down imaging, side imaging, everything. Have the Navionics mapping card and another sd card to store stuff.

Been watching every You Tube video out there and this old man is still a lost ball in high weeds.

I need some help. I am in Central KY and not close to Kentucky Lake where I understand there are people that will take you out and train you. I need that service in the Versailles area and willing to pay a reasonable fee for training. Taylorsville Lake and Green River Lake are my two local lakes as well as the Kentucky River.

Can someone help?

Thank You