Novices only buy mainstream currencies, BTC, ETH, XRP, USDT, BCH, these are mainstream currencies. Then you must choose an exchange, such as big platforms like Binance, ZB.com, and Huobi. An established exchange has a high safety factor.
Novices should choose mainstream trading platforms, such as ZB.com, poloniex , kucoin etc OTC security merchants. Trade with caution. After all, large exchange websites have higher security attributes, and everyone’s funds and transactions are relatively more secure.