I wish to write several stand-alone projects/programs using Mathematica because of its easy-to-use graphics. I could use Python for this, but Mathematica has built-in graphics that would be better and much easier to program than Python's limited graphics capability.
For example, as a pilot project, I would like to write a 2-D simulation of Conway's Life using the ClickPane for easy initial data entry. This can be done in the notebook environment, but I have not been able to discover how one gets an existing program to initialize and run when its notebook is first opened.
I have exhaustively researched the provided Mathematica Documentation and many Mathematica textbooks, but I cannot find a single source that shows one the functions and steps necessary to achieve automatic program start.
Many thanks for your help.