Scene Navigation + sel Track Record Question

Hey friends, im still trying to find some more documentation on how to properly write my own lines of code for basic reactions. I’m starting to understand the syntax but there are no resources for the vernacular… are there?

I have two questions.

First, I would like to write a simple reaction to listen to a button on my midi controller and when pressed, start recording into a clip on the selected track.

second I have a 1×4 scene/track session box set up. I have the navigation set up on my foot controller such that one button incrementally steps down and the other steps up scenes by 1.
I would like the scene navigation to also highlight the horizontal row of clips such that when I navigated to scene X (lets say 4 for example) on my session box and pushed that selected track record button, the clip that would start recording would start on the scene that I have highlighted with this session box.

Thanks in advance for the help!