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 see that many advise for beginners to use such exchanges as IDEX, Etherdelta, Forkdelta and others, but the fact is that these are decentralized exchanges for trading ERC20 tokens and using them you can not make a deposit of USD or another Fiat currency and on these exchanges there are no trading pairs USD/token*. I do not advise Yobit to use it, it has a very dashing reputation and this is not groundless. You can start with the
https://exmo.com exchange, because it is the most convenient, works without problems, the support service responds quickly enough. You need to undergo verification and confirm your identity, after which you will be able to deposit EUR, USD and other currencies, then buy coins and trade them.