Help with tweens please[Solved]

Unlike when i learned meshes i could just look at a reference but when i did the same with tweens i didn’t seem to understand a thing, could someone please help me understand them and how to use them in my code, thank you.

https://coolcodea.wordpress.com/2013/07/18/995-tweens-what-are-they/

https://coolcodea.wordpress.com/2014/01/24/146-playing-with-tween-functions/