Task Scheduler is not that complicated. I suggest sitting down and making a simple one with calculator launching notepad or something.
Powershell is designed to be a simple scripting language. Generally very straight forward.
You can open Powershell ISE on Windows and write the script there. It would basically just consist of two lines.
Start-Process C:\MyApplication.exe
Start-Process C:\MySecondApplicatio.exe
You would end up with a little file with a .PS1 extension. Put that somewhere. Then make a shortcut to it, and change the icon give it name what have you and place it on the desktop.
Just have to find the executables for the programs, and give full paths to them.