I never bought anything thru trading. I have no experience buying from Binance trading.
Study it first, don't decide on anything unless you know how to. There are virtual trading simulations which you can try and learn trading through it. There's no money needed as if you're actually buying and trading in the real market.
In this article, there are five simulators.
https://dowmarkets.com/education/cryptocurrency/crypto-trading-simulator/