Normally it is suggested to start with small capital because of many reasons. One reason among many others is that you do not have the skills when you start so having low capital invested, you would not have to face a huge loss if there is any kind of mistake. Once you are pretty aware of the whats and hows, you can put in handsome money in a good project to increase your outputs.
That is true but the creator of this thread wants to trade with a capital of one dollar, not only that is a huge waste of time but the fees will eat his capital really fast, you need to begin to trade with a capital that is small but that is still significant and that can give you profits that you can actually enjoy, for example even if someone invested that dollar and earned 1000% he will only have 10 dollars in profits and that is not much regardless of where you live.