I was away from crypto for years and now I'm trying to get back into the game. I was really STUNNED that there is no exchange, even after many years since bitcoin started, that we can just deposit USD and start exchanging altcoins. I hope I'm wrong because this would be the single biggest hurdle for altcoins to be widely adopted by general public. There are just too many hurdles to jump over just to START trading.
I am also a beginner. Being a beginner is not that easy because you might lost your coins because of inputing wrong address..
As of now I already tried kucoin, etherdelta, idex, hitbtc.
For me the best exchange is hitbtc because it is convenient to use, and second is kucoin..