I found one of best video on YouTube which is a full course on cryptocurrency for beginners. It's about 2 hours long, you need to take your time and watch it multiple times. The more you watch it, is the more you will keep understanding it better.
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I guess that's what the demo account is for although I wouldn't like to refer to them as dummies because they might just be new to the cryptocurrency market and need to be coached on how and what to do when they finally get a real account.