I will not explain about Helm. I won't even give you the elevator pitch. I'll only say that it is a project with a big and healthy community, that it is a member of Cloud Native Computing Foundation (CNCF) (https://www.cncf.io/), and that it has the backing of big guys like Google, Microsoft, and a few others. For everything else, you'll need to follow the exercises. They'll lead us towards an understanding of the project, and they will hopefully help us in our goal to refine our continuous deployment pipeline.
The first step is to install it.