My current obsession is trying to complete every exercise to a proficient standard at Khan Academy - all 207 of them.
Khan Academy is one of the most important websites on the Internet, in my opinion. Just as the Wikimedia Foundation wants everyone to have access to free and reliable encyclopaedias, dictionaries etc, Sal Khan wants to teach the world how to do maths, general sciences and, well, everything.
Beyond GCSE maths I have very little formal maths training. I pretty much worked out what I needed to know for poker purposes, and used my own notation. In retrospect, I should have made the effort to learn the proper notation. I knew little calculus but lots about statistics and probability before starting this adventure. Now, I know more. Which is the whole point really.
Still, 190 out of 207 exercises completed, but only 20 out of 2615 tutorial videos watched while logged in. The quest continues
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