We explained how to install the command line tools so you can transpile Typescript locally on your computer.
We covered the core features of ES6 such as
const, template strings, fat arrow functions;
for-of loops, Map and Set; as well as how to deal with asynchronous programming by using Promises.
With Typescript we covered classes, class access modifiers, interfaces; decorators, modules and types including generic types.
We’ve covered a lot of topics but still this is just the essentials required to build Angular 2 applications, there is more to learn in each of these areas.
If you would like to learn more about ES6 I recommend reading this book (it’s free): https://github.com/getify/You-Dont-Know-JS/tree/master/es6%20%26%20beyond
If you would like to learn more about Typescript the official documentation is a good place to start: https://www.typescriptlang.org/docs/tutorial.html