The approach
Start with the right question.
Start with accurate depth, chart orientation, transducer position and sensitivity before chasing advanced settings.
In practice
Make it useful on the water.
Confirm electronic clues with physical structure, bottom contact and repeatable locations.
Keep learning
Connect the dots.
Use this guide as a starting point, then compare it with the water you're fishing, the tackle you're using, and your own observations. Good fishing knowledge grows through real practice.