CNET: “Cryptocurrency reached a peak in 2021. Bitcoin once again notched an all-time high valuation, surpassing $65,000 (earlier in the year, it had dipped below $30,000). And this year bitcoin — and cryptocurrency in general — penetrated deeply into financial services as well as the culture, gaining an expanding foothold in popular art, commerce and other corners of the mainstream.  If you’re looking for a primer on bitcoin and cryptocurrencies, you’re in the right place. We’ll take a look at the basics — what bitcoin is, where it comes from and how to buy it — as well as a range of other topics including valuation, legality and its practical applications…”