Bid price is the price you will sell at if you go short and Ask is the price you will buy at if you go long. The "bid-ask-spread" or just "spread" is the pip difference between the prices.
I would'nt say he is the best but he is really good. What he teaches you is nothing special as you would imagine he wont give away his secrets or he will become less profitable
Look if you really want to buy it its your choice but what they actually teach you is stuff freely available on the internet. You can even find his stratergies for free just search his name in the forums.
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