Writing a Rust SDK for financial infrastructure is probably not the right place to start. It would be like being thrown off the deep end of the Mariana Trough, chained to a couple of industrial sized mega grindstones, and with a transmitter to your heart that, if it stops beating, makes nukes go off.

Learning code probably still starts with Python nowadays. You know what? Instead of using existing golang tooling, I'll write the code that would help with ~Music performance measuring in Python instead. That functionality has some nice elements, like some data manipulation and aggregation, interfacing with external APIs and reporting that can serve as a support for the learning curve.