I am new to crypto and I want to learn how to trade but I do not know where to start. Please give me some advice on what are the best exchanges where I could learn how to trade. Your advices will be highly appreciated.

If youre going to choose any exchanger there are lots of things you have got to consider first before choosing them. You have to know if that exchanger is safe, and you can do that by asking questions about that exchanger online or searching it up on the web to know what people has to say about it.
The check the liquidity of the exchanger cause the higher the volume the better it will be. Next is to check out their customer support ,the fees and how many payment methods they offer to their users. And always look for exchanger that are beginner friendly just like Coinbase.