Hi,
When it comes to which types of diagrams I suggest that you start focusing on the UML-RT Capsule Structure Diagram, and when more work has been done in the behavior modeling area that you look into the UML-RT State Machine Diagram. Those are basically the two major diagram types applicable for UML-RT.
There is also a third class-diagram-style of diagram, where you are able to show (customized) shapes for capsules and protocols, with dedicated compartments for attributes, operations, port and capsule parts respectively in, out, inOut protocol messages. Capsule parts and ports are visualized using the association notation between capsules and capsules respectively capsules and protocols. Of course you are able to show ordinary classes and relationships like generalization and dependencies in this diagram type. The implementation of this diagram type though is not started at all, and I am not sure to which MVP (if any yet) that this has been assigned.
When it comes to example models with structure and state-machine diagram types, I guess Charles have some models used for demoing in the Git repo.
Charles, any suggestions?