The fellowship was remote and very much self-motivated, which let me work around my summer classes and other summer plans. The training was very helpful, and structured enough to help me actually improve.
What I wish was different
I wish I'd done the fellowship in a city where there were more people to collaborate with. I was a little lonely in San Luis obispo.
Advice
If you can join a group in a city with a lot of other fellows, do that. I wish I had the option to collaborate more.