What are the best resources for QUICKLY learning and being productive in vanilla JavaScript?

People who replied my question asked about my current skill set, so when I tested my skills through Pluralsight assessment, following was the result.

Actually I know some JavaScript, but I wanted to be kind of an expert who is very confident when writing JavaScript applications.

The answers will also serve those who are completely new to JavaScript or Programming and open this question in hope to get a proper and quicker path which don't waste much of their time.