Nerdwallet- 

 What is cryptocurrency?

"Cryptocurrency is a form of payment that can be exchanged online for goods and services. Many companies have issued their own currencies, often called tokens, and these can be traded specifically for the good or service that the company provides. Think of them as you would arcade tokens or casino chips. You’ll need to exchange real currency for the cryptocurrency to access the good or service.

Cryptocurrencies work using a technology called blockchain. Blockchain is a decentralized technology spread across many computers that manages and records transactions. Part of the appeal of this technology is its security."

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I personally use coinbase.com, I receive no compensation from for this article. However on their website you can earn coins by learning about the various coins they offer.

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Lastly Netflix, has a series call "Explained" season 1 episode 5, how crypto started and the basis of how it works.  There are many other sources that cover this topic, these are just a few to get you started.

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