I just signed up for a 30 day trial and have access to a sample repository. I was searching YouTube for beginner videos and they talk about installing on local machine, etc. Since I already have a sample repository, I am looking for getting started where I can understand the concepts of data versioning, branching, etc. Any pointers to videos, getting started material for this purpose, welcome

Welcome to the lake! The repository itself has an example you can follow. However, if you are looking for a video example to get started, this could help: