It is true that BTC is currently correcting, and this is a really good moment to look at and buy Altcoins, but remember to never buy a bad Altcoin on an exchange, so if you are not good at judging how Altcoins are progressing don't ever buy them, because things like this which is very risky for you in the future. It's better to ask someone around you who is more familiar with the world of Altcoin trading, that way you can find out which Altcoin you should buy there.
Buying at dips are actually good strategy because the general market movement is currently retracing. I'm looking forward to see a perfect opportunity for me to entry with perfect execution. Buying good altcoins are really as long as it have a high volume and good liquidity. There is a risks but you can manage if you will invest un your knowledge.