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. 
I personally buy and exchange cryptocurrencies on Linkkoin and Xprocrypto, as these are really easy to use. And you can buy cryptocurrencies by credit/debit card, so then it takes much less effort and time for the transaction.