I don't see why anyone would want to hold a currency whose value shoots up and down like a demented yoyo. That's no way to save for your old age.

In Britain, the Financial Conduct Authority issued this warning:

I think many financial advisors agree that some percentage of one's investments should be solid, blue chip affairs but some smaller percentage can be wisely chosen high risk/high gain. We all know Bitcoin is pretty high risk but it does appear the trend over years is upward. I just read about a guy who lost his little piece of paper with his password for an account in which he had originally invested around $20,000, IIRC. He may have added to the original but his investment was always measured in mere ( heh, I say "mere".. sigh) thousands. Today it is worth $250,000,000.... he just can't get to it and has only 2 tries left. So I suppose that counts as risk, too, but that is an amazing fortune don't you think? That sort of risk is manageable. The return on investment is just crazy, but true. I don't see how it can ever totally go away, and I do think it will become even more important over time. It's too global and uncontrollable to stop or hack it all.

Have a look at www.etoro.com, a trading website, mainly stocks but also crypto currencies. You can invest modest sums (~$100) or substantially larger amounts. However CFDs (contracts for difference) and leveraged positions are AFAIK not permitted for crypto currencies. toro also permits a play (dummy portfolio) which you can use to practice trading without risking your own dosh.

Nice collection of 3rd part javascript. See attachment. I call spam.

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I agree. I am only stating my trading journey with crypto.