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Start with Bitcoin & Ethereum. There are 5 min videos describing what they are and various tutorials on how to set them up. Then I would expand to Ethereum Contracts (https://coinmarketcap.com/assets/views/all/) and go out from there. There are fortunes to be made (and lost), but once you open the box you can't close it.

I have started bitcoin few weeks ago. Now still learning ethereum from clif high's videos. Thanks for your info, i will check it out

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