This is all pretty much common sense trading knowledge.

I think the most important idea to take away from this is, do not pay attention to fluctuations. Especially rapid ones. Any/all commodities fluctuate in price. ---> This is how dirt bag speculators make money. <--- personal opinion, one which I feel very strongly about. Anyway, this is not exactly 100% true, because speculators also rely on people like us, to sell with out paying attention. . . people mining bitcoins should probably pay attention more but I think we all know that will never happen. Sadly.