TigerGraph is a graph database. Why should you use a graph database? Get the answer to that question here. This eBook provides a more detailed explanation.
There is a cloud version of TigerGraph and you can get a free login and create one free database.
This video walks you through creating a movies graph database. Here is a link to the data set used in the video.
I was able to do all of this except write the queries. Interesting stuff.
This is a starter kit for learning TigerGraph.