Watch out for scams. There are a few different scams in the crypto world. Anything that isn’t buying a coin with a good reputation is a big risk. Learn more about scams. In short, be super careful about anything that promises free coins, sick returns, or wants you to lend your coins. Buy the top coins using a careful strategy and ignore all the sites promising you they can outperform the market if only you give them X, Y, and Z.
We've had splits in the technical community before. Two years ago, Angular was the dominant Javascript framework and React was new with a small following. Angular's community split between Angular 1 and 2. Today, there are 236,472 repo's associated with React compared 247,335 for both angular variants. Alone, interest in react is about to supercede both variants of Angular combined.
Ethereum bounced from the demand zone twice forming a tweezer bottom BUT was unable to close above the EMAs, which does not bode well for bulls. The support level near the channel bottom and FIB seems to be holding so far but signs of resistance are creeping in. MACD signal line is trying to crossover bullish and histo has just now turned gree, however, RSI ...
Lots of traders use bots (you might want to as well if you have the chops). To the next point, lots of traders use trading bots. Some are white hat; some will try to get you to make bad trades. Keep an eye out for bots. If you are using a bot, be careful, there are bots designed to exploit poorly programmed bots. In general, if you don’t have a solid grasp of TA and crypto trading, skip the bot. They are only as useful as the strategies they run.

The cryptocurrency market, which consists of bitcoin and several other major digital currencies, crumbled June 22 as the majority of the coins dipped by up to 10 percent due to six exchanges in Japan that were ordered by the Financial Services Agency, its financial watchdog, to improve their current practices, and as two exchanges were hacked within an 11-day period.

NOTE: Once you have Coinbase down, try moving onto GDAX. It’s, in overly simple terms, like a better version of Coinbase with lower fees. Coinbase operates both platforms, and both use the same logins. GDAX is the preferred exchange of many Bitcoin traders in the U.S. It caters to both pros and novices. After you master that, then consider exchanges like Bittrex and Binance.
Disclaimer: Trading carries a high level of risk, and may not be suitable for all investors. Before deciding to invest you should carefully consider your investment objectives, level of experience, and risk appetite. The possibility exists that you could sustain a loss of some or all of your initial investment and therefore you should not invest money that you cannot afford to lose. You should be aware of all the risks associated with foreign exchange trading, and seek advice from an independent financial advisor if you have any doubts.
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.