Modifying A*Pathfinder...

I went and got A*Pathfinder Pro and would like to use it in my project. It has a pre-made AI-Follow script but it only allows one target. I would love to make an Array of targets which the script would randomly choose a target from but, the scripts are made in C# and I only know JavaScript. Does anyone know what I can add to this starting point to modify if for what I want it to do? Or can someone know where I can get a crash-course in C# where I can get the code basics to write the code myself?

This is more a general programming question, than a unity question.

This is how I learned to code in C# when using unity
by wrapping my mind around his examples thanks to the other programming languages I know.