Hi there fellow swifties! 
I finally got around to writing the first couple of interactive DocC tutorials for Swift Bitcoin here:
The first chapter lasts about 1 hour and covers basic bitcoin cryptography like hashing a public key all the way to verifying Schnorr signatures. The plan is to release one chapter per library vendored by the package: Crypto, Base Protocol, Wallet, Blockchain, Transport Layer, RPC and Node Service.
I’d appreciate any feedback both for the tutorials / documentation as well as the API itself which I can still tweak before the 1.0 release is out.
Also if you could give a star 
for the GitHub project that would be amazing as it will help people –specially devs! – discover Swift Bitcoin 
Thank you so much, see y’all around!