Has anyone travelled from Venice to Assisi? If so, was it easy to navigate the train system?
How do you mean?
Getting tickets, boarding train, finding your train?
There is no direct route Venice to Assisi
I think fast train to Florence then change to regional to Assisi then a bus up to town
Going to be a rather long trip
Use the official Trenitalia site
https://www.trenitalia.com/content/tcom/en.html
For all info on train travel in Italy use Man in Seat 61
https://www.seat61.com/train-travel-in-italy.htm