For newbies, the best "exchange" is a investment platform that is not an exchange, with established coins.
CoinBundle haves the top 20 coins (securer than exchanges, that haves lots of coins that are like gambling), its easier, haves no fees for service/trading, no need to choose coins but to choose an already done portfolio to invest, withdrawal to bank, and low fees on deposits/purchases from bank cards (accepts both VISA and MasterCard).
It has been also featured some times as top writer on Medium.
Commonly the best bundle for beginners is the Conservative, that is basically about Bitcoin and Ethereum. With some research you could also take a look at Emerging and Coinbasic.
Don't take my words as what exactly you need to do, but do your own research, know about CoinBundle before joining it.
Please reply about what you think