My First Dataset, How Do I Proceed??

I am trying to further my excel skills, eventually also python, power bi and sql. I just find it fun and i think its good skills to have.

My question is. What are some of the first things to examine after getting a dataset and cleaning it?

Im working with some datasets from kraggle.

Are there some things the experienced people always do? Like make a top 5 of valuables, or of top sellers etc, or is it something completely different that i am skipping?