Buy low, sell high is a sure way to make money, but how many people can really buy low and sell high?A good time to buy a stock usually is when there is a broad market sell off, which drags the stock down. Another possible good time to buy is when certain news affects the stock price, but actually has no impact on the company's financial performance. One good example was the short report on Enphase in 2018 and 2020 where the stock fell more than 20% in a single night. It was a good opportunity to buy in on those days.A good time to sell a stock is when the fundementals of the company has changed. Slowing growth, losing market share or changing business models are some examples of this. Another good reason to sell would be if you have found a better investment opportunity to place your money into.

To understand cryptocurrency, there is one concept that you couldn’t avoid ---blockchain
The simplest way of explanation, blockchain is a specific type of database.
A traditional database runs in a centralized organizing way that requires an administrator to manage and maintain all of the info. Blockchain orient its data in a decentralized way that requires no individual to manage. It simply structures all data into blocks that are all chained together in chronological order. When a block is filled, it would become immutable and formed as a part of its timeline. Each block would be given an auto-generated hash code as it becomes chained.
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