Testing an AngularJS 2 Application

Confession: I've never done any kind of automated testing, whatsoever. Curse me if you want.

Basic Info: IDE: Webstorm, Language: Typescript

Queries:

1. When to Begin ?
2. Where to Start ?
3. What are the Options ?
4. What are the Best Practices ?

PS: All I want is a step by step guide and an Article'll do. Change the question if neccessory.

I'll be highly obliged.