Help. I'm new to this fish finder

What is the haze above the bottom?

the haze just under the numbers apears to be the thermocline line or however you spell it. hazy at the bottom shows you how solid the bottom is, ei silty or solid rock. and it looks like you found a brush pile too

Wish I would have marked that. Still learning.

I need new glasses. Cant see your pic too well.

you will find more. I have a lowrance, it has a track back feature, i can drive around an area of the lake, then find a shady spot to sit and look back at the trip and mark interesting things. it saves location and depth. and it is one of the cheaper down imagers. I really wish they made one that said fish here using this.... lol!