for example i have 300 usd. how much i’ll earn on average from 300 usd?how much is the different between values of money.i know something,that man earns money on the diffirence of values of money.we buy “cheap” dollar and when the values increase we sell that money.and how much that increases on average?and how we can loose money,if we don’t sell them cheaper?can you explain )me on simple language?thanks)
i didn’t ask about that,i want about forex now