The approach
Start with the right question.
Start with controlled drops or retrieves that let you recognize bottom and bites.
In practice
Make it useful on the water.
Record jig weight, line and depth as a complete configuration, not just the bait name.
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.