Without further adieu…
Tip #1: Start by Reading the Wikipedia Entry
Tip #2: Learn it Outside of a Browser!!!
Tip #3: Read Some Books
Tip #4: Watch some videos
Tip #5: Get Involved in the Community
If you really get into it, attend JSConf.us or JSConf.eu. They are the best JS-related conferences out there.
Tip #6: Ignore W3Schools!
Tip #7: Be Curious
Well, those are the tips that immediately come to mind. There’s quite a few more ideas, blog posts, tools, resources, services, etc… that I’d love to recommend, but you have more than enough to get started. Now go get coding!