I think the best coin to buy right now is bitcoin .,many people are investing on it so I think it is the best coin for today
Bitcoin is leading crypto markets so you can start investing in bitcoins. Later you can start learning about other good altcoins and invest slowly. There are many good altcoins are there to consider like IOTA, ETH, LTC and many other coins. Bitcoin already runs up a lot and it may go for a correction soon so don't invest all your money at once.