If people aroused some fear in you while warning you to be careful you can first start by careful investment, something like dothebeats did. This means, if you have in mind to invest X amount of money into promising crypto currencies however you still fear of an incoming correction of the whole market, invest only 20% of X into the market now (or better yet only 10%). The thing is to invest small chunks over a longer period of time, averaging high volatility and possible down-corrections of the market. And go for long-term investments.