Both are very different things. Once you invest into a coin, you firstly must know on what terms you are. Ask yourself a question are you going to hold the coins or are you going to be a trader. Trading takes some time to learn and is more risky than being a regular holder of coins. It also requires experience by the trader as there are a lot of altcoins which eventually fall apart and you're left with nothing. Holding coins is much easier than being a trader, both take an equal amount of time, trading with experience and holding long-term also takes time. You'll eventually get the hang of being a trader, but in the meantime you will get your money doubled or tripled of that one coin which you've been holding.