Improve on Quick Start Guide with PyTouch

Going through the quick start in Module 1 of LLM Bootcamp, I realize that most people who are undergoing this Bootcamp opportunity provided by AI Planet with me might not know what most of the lines of code are doing or meant for. Hence, I was motivated while trying to learn the code myself, to add comments to simplify any aspect of the code that might look complex or confusing. In addition, I don't know the magic that happens to my model to be a little bit improved more than the accuracy provided in the quickstart guide given us at the Bootcamp.