Programming FPGAs by Simon Monk and the Mojo v3 have been what I've been getting started with. It might be a little basic if you've been working in-depth with GPUs already, but the Mojo v3 is a great board to learn on - connects directly to your laptop via USB. It takes a lot of the magic out and makes it more like you're just programming an Arduino.
It teaches the same first principles in a smaller format with less room for error, but this particular board won't be able to scale up to a prod environment.
Agree with another commenter that an AWS EC2 F1 instance might be closer to prod for your purposes.
