For just $ 1 you can trade. There is no minimum amount, the more funds the better and the greater the risk of loss. That is if you have large funds to trade, so be careful when buying coins that are not potentially future. That will result in you losing a lot of funds.
as i know that the minimum total trade in all exchange minimal 0.0005
BTC and it's very rare for an exchange have minimum 1$ every trade
I have $ 500 or more, is that enough to invest or trade daily ?? Do I need to buy cheap coins or expensive coins? I want your opinion for me as a newbie.
i think it's best for you to do your own research for every coins that you want to trade