https://swift.org/getting-started/
Officially supported OS versions are macOS 10.12 (Sierra) and Ubuntu 16.10. You are highly encouraged to use either of those versions.
- Tutorial on Swift: https://kyouko-taiga.github.io/swift-thoughts/tutorial/
- Petri net simulator: https://github.com/kyouko-taiga/PetriKit