Three years ago I experimented with crypto trading on various exchanges myself, but since it was a long time ago, I want some more up-to-date information. A friend of mine wants to try buying and selling Bitcoin for USDT and perhaps a couple of famous altcoins just to see whether he can 'feel' the market. He was thinking about Binance, and it's of course a good exchange, but it seems that they have strict KYC policies and their terms allow them to share personal data of their users with too many entities (like, not just the authorities, but also companies that want to promote some products, it's crazy!). What would be a good exchange for a beginner that just wants to experiment with, say, $20 worth of BTC? It doesn't have to be a completely anonymous exchange, but perhaps an exchange that reserves the right to check identity, but probably would not actually do it if a person is playing around with such a small amount of money. Of course, it has to be reputable and the fees should not be overwhelming. Back in the days I had a positive experience with HitBTC. Would this be a good choice? Thanks!