Type Annotations Courses
Pluralsight Introduction to TypeScript
Udemy TypeScript 4 In-Depth
Pluralsight TypeScript for Professionals - by Basarat
Udemy TypeScript Interactive Handbook
Independent Introduction to Elm, v2
Frontend Masters A Tour of New Hack Language and Library Features
Meta via YouTube Learn TypeScript: Functions
Codecademy Learn TypeScript: Complex Types
Codecademy How to Use Type Annotations in Python
James Briggs via YouTube