We liken our approach to stock investing. Bitcoin and cryptocurrencies are commodities; they are not stocks. They have prices, but they are fundamentally different. The exchange may be the only similarity between the two. We know that the underlying technology powering Bitcoin has potential to be adopted for institutional and retail capital alike. Cryptocurrency’s decentralized nature means that it cannot be shut down or manipulated easily. Many people ask why own Bitcoin, it’s that simple. We believe in the future and so should you. So we’re going long with Bitcoin anticipating capital will continue to flow as it’s potential is realized.
You’ll find that different exchanges cater to different markets. Today, most countries have at least one cryptocurrency exchange specializing in their own currency. There are exchanges that can accept New Zealand Dollars in exchange for bitcoin, for example. Other exchanges are known for certain pairs. Bithumb, for example, has particularly strong liquidity in the ETH/KRW (South Korean Won) pair at the moment (and it’s easily the most popular cryptocurrency exchange in Korea).
Let’s say on January 2, 2017, you owned $1,000 and exchanged it into euros (EUR) with another market trader at a rate of EUR€0.9565, leaving you with EUR€956.50. Then, on November 24, 2017, the value of the US dollar had fallen from EUR€0.9565 to EUR€0.8380, so you decide to exchange your euros back into US dollars. After finding someone willing to sell their US dollars for your euros, you carry out the exchange at the new price. Your EUR€956.50 is now worth $1,141.40, leaving you with a profit of a little more than 14%.
On the other hand, some coins serve a very unique function in the real world. For example, Power Ledger is a fairly new and interesting cryptocurrency. The goal of this project is to provide a system for consumers to trade electricity with one another. For a young project such as this, the best thing you can do is first decide whether you believe in the technology and the team behind it. The second thing you can do is read news surrounding the project. All of that information, along with a look at the coin’s market cap, is going to ultimately determine whether you think the technology might reach mainstream adoption, thus making an investment worth your while.
If you have an account on Poloniex.com or Bittrex.com (and other crypto exchange sites) you can use their API with TabTrader to easily trade and monitor prices on your phone. It's important to me that the app connects to Poloniex and Bittrex because these exchanges have good volume. And they're pretty credible. TabTrader supports other major exchanges too :)

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Leverage is money that a broker loans you. Unless you’re a professional trader, you should stay away from leverage until you’ve learned everything you can learn about making trades with your own money. While leverage can help you make greater profits with short cryptocurrency movements, it can also amplify your losses when the trade takes a wrong turn.

I think the simplest place to buy, sell, and store coins is Coinbase (and our tutorial below will help you get set up with that), but you can only buy, sell, and store Bitcoin, Ethereum, Litecoin, and Bitcoin Cash on Coinbase. If you are serious about trading cryptocurrency, you’ll need another exchange like Coinbase’s GDAX, Bittrex, Binance, or Kraken (and you’ll likely want to find a wallet to store your coins in). See a top 5 list of cryptocurrency exchanges and the Best Bitcoin Exchanges ranked (those above are my picks).

These are what allow us to buy and sell cryptocurrencies. There are a handful of popular crypto exchanges, some of them have advantages over others. For example, some exchanges don’t allow us to deposit and withdraw using fiat currency like the U.S. dollar and euro; others aren’t available in certain countries. In this guide we will focus on two very popular exchanges, GDAX and Poloniex. GDAX gives us the ability to use our fiat currency to buy Bitcoin. Poloniex does not, but does give us a wide array of altcoins to trade. There, we’ll be using major coins like Bitcoin and Ethereum to buy the altcoins, and vice versa. Other popular exchanges such as Kraken and Bittrex offer even more coins.
Always pay attention to Bitcoin. Most altcoins (every cryptocurrency except Bitcoin) are pegged more closely to Bitcoin than Asian currencies were to the USD during the Asian Financial Crisis. If Bitcoin price pump drastically, altcoins price can go down as people try to exit altcoins to ride the BTC profits; inversely, if Bitcoin prices dump drastically, altcoin prices can go down, too, as people exit altcoins to exchange back into fiat. The best times for altcoin growth appear when Bitcoin shows organic growth or decline, or remains stagnant in price.