I will suggest you to buy only BTC and ETH in current market situation. Market is very unstable currently and thus there is risk with alt coins.
If someone is interested in bitcoin then it is the best time to invest in it because its price is a bit low now a day and this can be beneficial to its users and investors. Very soon bitcoin will strike back and it can give a very reasonable profit to its users as it did in the past. I think this is a golden chance for those who want to invest in bitcoin.