You will have to excuse me but I have never seen an exchange chart, don't have a masters degree in finance and there is no legend as to how it works. I am new to this but interested in giving it a try.
It would be nice to have a tutorial on HOW TO GET STARTED WITH EXCHANGE (the complete idiots guide
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Are the red number buy and the green ones sell?
What is the purpose of the "depth chart" and what does it represent?