Common sense doesn't apply for some traders. In October, Spatafora started trading bitcoin, litecoin and ethereum to learn about the market and understand whether any of the coins were undervalued. Instead, he found that many of the investors exhibited irrational exuberance in believing the virtual currencies would never stop their climb in the market.
There are lots of studies about emotion in trading. Fear of missing out, greed, etc. are very common causes for people to make mistakes while trading. No matter how experienced you are, you will eventually be led by emotions and this might make you lose money, so you have to prepare yourself to do it as little as possible and to control yourself better or you will lose more than win.
A successful strategy regarding this is placing very low buy orders. About a week ago a crazy dump occurred, selling off Augor coin down to 25% of its value! After a short while the market recovered slightly and anyone who had low buy these low orders could easily double or triple their investment. Placing buy orders requires special care, don’t wake up when you’re far away from the market to find your buy order is suddenly higher than the current market price!
Cex.io provides a wide range of services for using bitcoin and other cryptocurrencies. The platform lets users easily trade fiat money with cryptocurrencies and conversely cryptocurrencies for fiat money. For those looking to trade bitcoins professionally, the platform offers personalized and user-friendly trading dashboards and margin trading. Alternatively, CEX also offers a brokerage service which provides novice traders an extremely simple way to buy bitcoin at prices that are more or less in line with the market rate. The Cex.io website is secure and intuitive and cryptocurrencies can be stored in safe cold storage. Check out the Cex.io FAQ

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!
Let’s say on your cryptocurrency chart at 250-minute candles, you see 25 candles where the price stays within a 100 point range. If the price contracted to a daily move of just 20 points, you’d be seriously interested and alert. You should see lots of overlap. This tells you there is a substantial chance the price is going to continue into the trend.
UPDATE: I do not recommend paying to enter a Cryptocurrency mastermind group – I’ve tried a few and found the ROI to be disappointing. I am now focussing on growing my portfolio passively utilising a cryptocurrency trading bot, the renowned Notorious Bot. Having a bot that trades for me, without emotion, using an advanced algorithm, allows me to grow my portfolio in the background without it cutting into my time or stressing me out. You can familiarise yourself with the basics of cryptocurrency trading bots here. 
Bitcoin Trading in Tight Range With Lowest Volatility in Months BTC Hitting Oct 2017 Support, GBTC Hitting Sept Support You Are Going to Need Ether for Coinbase Wallet There Was a Major Bug in Bitcoin’s Code, but Developers Fixed it Van Eck SolidX ETF Postponed International Bitcoin Transfers 1,000s of Times Cheaper than Banks Charlie Lee Busts FUD in Epic Twitter Posts (i.e. a List of Reasons Why Litecoin is Awesome) The CNBC Fast Money Counter Indicator Bitcoin Flash Crash at Cboe XBT Expiration Date; Most Alts Refuse to Panic BTC is Trapped Under Some EMAs and Has Been Most of 2018

As mentioned above, get ready for tracking and research. If you want to be successful, track the latest cryptocurrency news, ranking and key indicators daily. Join the discussion threads on Reddit and Telegram. And don’t be afraid to ask fellow traders questions. If you look at those discussion threads, you will see that it is a very engaged and helpful community. This will help you to make smarter decisions. But don’t do the FOMO trade (Fear Of Missing Out). Don’t be caught in the fear of missing out the next big opportunity in the crypto space.
There are some people who believe that Bitcoin is the only blockchain based protocol which has value and that all others will fail. These people are known as Bitcoin maximalists and their belief is based on economics, specifically Austrian economics, and that the technology which is great for Bitcoin is not useful for anything else. I am more open minded and believe that there are other applications of the technology which will create sustainable ecosystems but I could be proved wrong here. It is important to spend time doing your own research and building up your own view on where the technology may be used.

So far, everything we’ve discussed has involved taking a long position on a coin. That is, our focus has been buying a coin at a lower price than what we think we will be able to sell it at later. What if we have some indication that leads us to believe that the value of a coin is about to decrease? In this case, we could take a short position, which is the same technique that made some people boatloads of money during the 2008-2009 housing bubble.
The cryptocurrency trading platform you sign up for will be where you spend a considerable amount of time each day, so look for one that suits your trading style and needs. Exchanges like Coinbase offer in-depth platforms, such as their Global Digital Asset Exchange (GDAX). It’s always worth setting up a demo account first to make sure the exchange has the technical tools and resources you need.

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.
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