Imaging on your fish finder

All this talk about fish finders and how to use them has me thinking. Does anyone have pictures or diagrams of what is what when you are looking on your fishing finder. My FF is an older one I am sure it is not the best when it comes to locating fish. I use mine for structure and water temp. But I am still unsure when I am viewing if I see eel grass submerged objects or other such items.
So does anyone have pictures of what this stuff looks like on your FF this would help the learning curve for most of us and, eliminate the guessing going on. Just wondering.

X2 Jeff, im new to the FF game so this would be cool.....

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It's not the best picture but on the right side of the screen you can see rocks and kelp. When fishing a area feel the structure with your bait and look at your FF at the same time and you'll learn what's what. Rocks, kelp, eel grass etc