I have not figured out anything yet.
I spoke with a local Karting shop and the owner/operator has agreed to give lessons. I was thinking once a week two hour sessions and start from there.
Other than reading threads I haven’t done too much else in planning.
I will hold off on the trailer and other equipment until probably age 5.
Scott - can you please let me know what you did with your son and when he started. It would be interesting to hear and thanks for your comment too.