Data modeling … with graphs by Peter Bell.
Nothing surprising for topic map users but a nice presentation on modeling for graphs.
For Neo4j, unlike topic maps, you have to normalize your data before entering it into the graph.
That is if you want one node per subject.
Depends on your circumstances if that is worthwhile.
Amazing things have been done with normalized data in relational databases.
Assuming you want to pay the cost of normalization, which can include a lack of interoperability with others, errors in conversion, brittleness in the face of changing models, etc.