I'm Vinay, I have recently completed my neo4j certification.
I work as a Data Engineer also as a Data Scientist.
I got acquaintance with Neo4j technology through a POC namely Recommendation Engine for event attendees and registrants.
I love nodes and edges, easy to infer and work on any network or related data.
Regarding certification, it's very easy.
Learning material: Just refer to the docs, thanks to neo4j developers they have documented very well.