I think that CAN-BUS Shield I linked has an Arduino library on Github, complete with examples you can reference, when you're ready for that step. You mention that most of your dev experience is in ...

While there are certainly other (perhaps simpler) ways of interfacing with a CAN bus, this one uses off-the-shelf electronics like Arduino-compatible microcontrollers, is permanently installed ...

This partly obscured photo is the only one Arduino has allowed out so far “Designed for maximum compatibility, the Uno R4 maintains the same form factor, shield compatibility, and 5V operating voltage ...