TIP: There are a few sides to cryptocurrency. 1. you can trade and invest in it, 2. you can use it for transactions (anywhere a coin type is accepted), 3. you can break out a graphics processing unit and some software and mine coins (see how to mine coins). Those are all valid and interesting, but with that in mind, this page is focused on “trading” cryptocurrency (and therefore also investing in it). With that said, even if you want to do the other things with cryptocurrencies, you still need to be set up for trading.
Especially for traders dealing with fairly large amounts, multiple, small entries and exits over a fixed period of time (dollar-cost averaging) can help obtain a good price for an asset over an extended period of time. Consider using time-weighted average price trading: specify n, t, and p such that you buy or sell n of a cryptocurrency over t hours for an average price of p.
If you choose to keep some stored on an exchange or a website such as Coinbase, then ensure you complete a full security setup and ALWAYS setup Two Factor Authentication, I recommend using Google Authenticator for this and not SMS Two Factor Authentication as your phone can be compromised by hackers. Google Authenticator creates a random number string each time you log in to protect yourself in case someone can get hold of your username and password.
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.