i need help with powershell coding

I have a project that i have in the works, it involves using powershell to read a text document on an external storage device to launch a program. i currently have the code to launch specifically steam games, but i also want to do this for progams like adobe products, such as illustrator or photoshop. to clarify, i am not trying to pirate or modify anything, this is simply just using powershell to basically copy and paste to launch in one way or a another, with