If you can afford BTC,then i would suggest you to give preference to BTC because investment is safe and return rate is highest than any other coin in crypto world.When BTC goes up all the coins go up and when down all the coin go down.After BTC the most outclass coin is ETH having second position in Coinmarketcap.ETH is very strong coin and its price is growing on daily base.Invest in ETH and hold it for some future time.You would surely receive handsome return.