Just simple from me, I think, there is no amount needed before you start trading, but, you have to start with an amount that will allow you to make a profit and cover trading costs.
Yes.There is no required amount in trading but as what most people say the bigger the amount of trading,the higher the profit you will get.But it all depends on the strategy you are going to use.If you are really smart,you can make profit even with a small amount.I suggest to start trading with an amount you can afford to lose.
If you have not learnt and studied trading, before actually implementing it, you will lose the amount you invest, regardless you have invested more or less.