Journey planning starts with the Nederlandse Spoorwegen (NS) Rail website, determining the best way to get from Maastricht up to Rotterdam (a two-hour car drive). The query engine is straightforward but was broken this morning, returning "No route found" to all proposals. No matter, there are only two main rail junctions to the north, and the information kiosk at the main station confirmed one change at Eindhoven. They said the train left at 8:37, and it was already 8:33, so I did a (slow) sprint over to Track 3, only to find an empty train that didn't leave until 8:54.
Once I arrived at Rotterdam Centraal, the next jump was to Erasmus MC. Not physically far on a map, but there are a bewildering number of options to get to the institution. Metro, tram, bus, are all outlined on the Rotterdamse Elektrische Tram (RET) website.
Local transit uses strippenkarten for access, but they are encouraging use of the new OV-chipkaart. I got a yellow OV-Kaart from NS, but it didn't look like the blue RET-style one that I needed. Further, it turned out that my Maastricht strippenkart wasn't transferable to Rotterdam's local system. Although tram 8 looked like the best bet, I arrived in the city center with only ten minutes to spare before the scheduled meeting and I could have spent an hour figuring out the last bit. So, regretfully I cheated and flagged a taxi for the last leg (10 euro).
Nonetheless, an encouraging trip, and it will get better with practice. And I managed to stay on the correct side of the train-split in Sittard, avoiding the side trip to Heerlen. 'A good day, overall.