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).
Altcoins and Bitcoins tend to react to each other. Sometimes they do the opposite of each other and sometimes they do exactly the same thing. It is not rare to see Bitcoin go down while alts go up (and vice versa). This is because almost everyone who has alts has Bitcoin, so they tend to move out of Bitcoin when it goes down and move into alts (and vice versa). Almost just as often as this is the case it isn’t the case. Many times, all coins will go up or down together (generally following Bitcoin’s lead). This dance often results in Bitcoin outperforming altcoins, however every x months we will see an alt boom where alts outpace Bitcoin quickly. If you can time that, great. Try to spot it coming and there is big money to be made. Meanwhile, alts can be tricky to just HODL, as they tend to lose value against fiat and BTC in the off season. Learn more about the relationship between Bitcoin and Alts. In a word, alts are generally more volatile than Bitcoin.
The second one is Extraordinary Popular Delusions and the Madness of Crowds. This investment classic, written in 1841, is the best book ever written on market psychology and will explain everything you need to know about just why cryptocurrencies have captured the imagination of the investing public. While it’s a long book, you only need to read three chapters: John Law's Mississipi Scheme, the South Sea Bubble, and Tulipomania.
Dad advice: Aim to buy low, sell high; try not to buy high, sell low. Look at the price trend, if we are at the highest point it has been in the past 24 hours (days, weeks, etc), that is inherently riskier than buying at a short term low. It can make sense to buy as the price starts to break out, but buying after a breakout at a new high while filled with excitement is a little “irrationally exuberant.” This is to say aim to “buy the dips” and often “the best time to buy is when there’s blood in the streets… even if it is your own.” Conversely, the worst time to buy is often (but not always) right after the price has shot up and everyone is manic. If you do buy high, and it ends up dropping shortly after, consider HODLing (to “HODL” is to Hold On for Dear Life as the price goes down. It is what you do when you buy high and then neglect to set a stop or if you are going long and can’t or don’t want to cash out yet). Buying the dips and holding can be dangerous in a bear market, and it can put pressure on you to sell low if you overextend, but its still often better than FOMO buying the top. Sometimes it can be wise to sell for a loss or to buy when the price is at a local high, but knowing when this is the case requires a rather high skill level. Thus, although rules sometimes are best broken, start by aiming to buy low and sell high.Two last points 1. Knowing when to take a loss is hard, buying the dips and holding is easy. 2. The dips WILL happen, you must be patient and ward off FOMO!
You could try this instead: Be sure to watch an exchange’s order book to better understand the actual prices you can get for the amount of cryptocurrency you’re trading. Consider breaking your order into smaller pieces to get a better price, or use a trading algorithm that lets you execute your larger order as a stealth order at the top of the order book.
Don’t invest blindy. There are people in this world who would sell a blind person a pair of glasses if they could make money. Those same people play in the cryptocurrency markets and use every opportunity to exploit less-informed investors. They’ll tell you what to buy or claim certain coins will moon, just to increase the prices so they can exit. Due to the highly speculative nature of the cryptocurrency markets today, a good investor will always do his or her own research in order to take full responsibility for the potential investment outcome. Information coming from even the best investor is, at best, great information, but never a promise, so you can still get burned.