You can get TypeScript at [http://www.typescriptlang.org/] or by just running this command (assuming you have Node.JS installed).

npm install -g typescript

To run the tests, use this:

tsc --out t/test.js t/test.ts

and then load t/test.html in your browser of choice:

open t/test.html

To run the first example, use this:

tsc --out examples/001-basic/app.js examples/001-basic/app.ts

and then load app.html in your browser of choice:

open examples/001-basic/app.html