Telemetry sounds fancy until you realize it is just honesty in graph form. Speed, braking, throttle, and time. It turns “I feel like I was faster there” into “here is exactly what happened.”
The first skill is asking one clean question
Most people get lost because they try to learn everything at once. Better approach. Pick one corner or one straight, then ask a single question. Did I brake earlier or later than my best lap. Did I get back to throttle sooner. Did I carry more speed, or did I just arrive there differently.
Consistency shows you what you actually control
The biggest gift of data is that it reveals what repeats. If your braking point moves every lap, you do not have a braking technique problem. You have a reference point problem. If your throttle trace is hesitant, you do not have a power problem. You have a confidence problem that the car is transmitting back to you.
Data should make you calmer
Telemetry is not there to shame you. It is there to shorten the time between a mistake and a lesson. Use it to build repeatable habits, then let speed show up on its own.
Don't Grind My Gears 
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