So let’s take our hypothetical 1 BTC from before and take a short position on Ethereum. We are able to borrow 2.5 BTC worth of ETH and sell it. 30 minutes later, the price of ETH has plummeted 10%. Now we can close our short position, buying back 2.5 BTC worth of ETH; except now, since the price has dropped, we are buying more ETH than what we sold. Our borrowed coin can be payed back and we take the rest as profit!
Closing a trade in profit. It is important to take your winnings out of a trade. Cryptocurrencies move faster downwards than they do upwards, and you don’t want to be late cashing out of a trade. You also don’t want to be too early and miss out on extra profits. There are a lot of techniques to help you make this decision that are out of the scope of this beginner’s guide.
EDIT: #10 Bonus (Suggested by @kerstenwirth ) — always check the ticker symbol. Ticker symbols are not universal, and may vary from exchange to exchange in rare cases. Those cases, though, can come back to bite you. For example, Bitcoin Cash trades on some exchanges as BCH, while it trades on others as BCC. BCC is also the ticker symbol for BitConnect, which was recently outted as a Ponzi Scheme. If you bought BCC under the impression was Bitcoin Cash, you would’ve lost a lot of money.
In stocks, it makes sense to sell losers, but that isn’t always true in crypto. In stock trading, if a company is not doing well, it can be smarter to sell their stock and buy a stock that is doing well. In crypto, big changes can happen quickly. A bearish coin can make a turnaround at any support level or based on some good news or rumors and make 100% gains in a matter of hours. If you aren’t trading frequently and aren’t at a computer 24/7, it can be a solid move to slowly build a position in a coin that isn’t doing well, but that you think is a good long-term bet. The only exception to this rule is this, if you understand TA, it is generally wise to ladder out when all the short term averages have fully crossed under the long term and in when they have crossed over. Your goal is still the same, to build a position low and hold until highs, you are just practicing some risk management in between. This added measure helps protect you from long bear markets. In other words, only sell losers if you have a logical reason and trust yourself to buy back in. If not, focus on building average positions (but plan for the worst before it gets better). Bottomline on this: Stocks move much slower than cryptos. So a loser sold now and shifted to a winner can mean months upon months of rewards. Cryptos tend to move fast and go into bear and bull mode in groups and go on runs at the blink of an eye. Sell a loser today and shift it to a winner, and trends could be changing by the time you wake up. It isn’t that you should never sell the losers and buy the winners, it is that it is trickier in crypto than it is in stocks and the same logic doesn’t apply exactly.
A “manageable amount” is obviously subjective and will vary for each person based on things such as time available to dedicate to trading. Feel free to do your own research to find the right exchange for you. I tend to value user experience of an exchange over the amount of coins on it. Ultimately, what exchanges you use is going to depend on your own personal preferences. GDAX and Poloniex will provide sufficient resources needed to be a successful trader, so they are definitely a good place to start.

NEO: Apart from being a cryptocurrency, NEO is known for its niche smart contract feature just like Ethereum’s. Smart Economy, Digital Assets Storage and Exchange Automation are achieved through Neo’s smart contract. And coming from China, if it gets to receive the welcoming use that the Chinese always give to their startups, it’s bound to make it big in the industry. It also ensures digital identity anonymity and achieves consensus through the Delegated Byzantine Fault Tolerance
Dollar cost averaging one’s purchases of Bitcoin reduces risk in sudden changes. This reduces the sting of or sudden pricing changes, reducing reliance on a single point of entry. By increasing your Bitcoin investment over time, you reduce the desire to buy or sell often. If there’s anything we’ve learned from the long run is that Bitcoin is here to stay (knock on wood). Stick to your gut, but don’t ignore others.
ACTION: Go out and find a few other people that trade, find people you trust. Start a group chat on Facebook messenger — or on whatever platform you prefer. Each of you should research 2–3 credible sources to begin following and then delegate the sources equally. Each day your team should study their respective sources and relay only the necessary information to the group, focus only on information that is crucial for advising trading decisions.
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.