Ethereum is in the first stage of discovery. Its chance of becoming the industry standard for global interbank and retail exchange, as well as a base platform for other more specialized cryptocurrencies is increasing by the day as more large banks and corporations join the consortium and contribute to its development and use. The all powerful JP -7.53% Morgan is becoming more deeply involved and has begun using it for real transactions.
Huge corrections are normal in this stage. This is desired by those in the know that want to accumulate a very long term position over time. Although it is still highly speculative, buying small amounts a key levels is the safest way to approach it. I have marked these key levels in the chart. Only buy what you can afford to lose though, as this is no where near a certainty at this point.