Add training workflow, datasets, and runbook

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+824 Part VI: Measuring and Trading Volatllity 
+However, if there is no news that would seem to explain why the options are so 
+cheap or so expensive, then the volatility trader can continue on to the rest of his 
+analyses. 
+SELECTING THE STRATEGY TO USE 
+In general, when one wants to trade volatility, a simple approach is best, especially if 
+one is buying volatility. If there is a volatility skew involved, then there may be other 
+strategies that are superior, and they are discussed in the latter part of this chapter. 
+However, when one is interested in the straight trading of volatility because he thinks 
+implied volatility is out of line, then only a few strategies apply. 
+If volatility is too low, then either a straddle or a strangle should be purchased. 
+One would normally choose a straddle if the underlying instrument is currently trad­
+ing near an available striking price. However, if the underlying is currently trading 
+between two ~riking prices, then a strangle might be the better choice. In either case, 
+a position trader would want to buy a straddle with several months of life remaining, 
+in order to improve his chances of making a profit. There is no "best" time length to 
+use, so one should use a probability calculator to aid in that decision. The use of prob­
+ability calculators will be discussed shortly. 
+Example: XYZ is trading at 39.60 and a volatility trader has determined that he wants 
+to buy volatility. With this information, he should attempt to buy a straddle with a 
+striking of 40 for both the put and the call. 
+Suppose that the current date is in December, and the available expiration 
+months for XYZ are January, February, April, July, and October, plus LEAPS for 
+January of the next year. Then he would analyze each straddle (January 40, February 
+40, April 40, etc.) to see which is the best one to buy. It generally seems to work out 
+that the midrange straddles have the best probabilities of success, given the way that 
+option prices are usually structured. Of course, the actual prices of each straddle 
+would be considered when using the probability calculator. In this case, then, the July 
+40 or October 40 straddle would probably be the best choices from a statistical view­
+point for a position trader. 
+If XYZ had been trading at a price of 37.50, say, then the trader would proba­
+bly want to consider buying a strangle: buying a call with a striking price of 40 and a 
+put with a striking price of 35. From the viewpoint of buying strangles, it does not 
+make sense to separate the strikes by more than one striking price unit - 5 points for 
+stock options, for example. This just makes the position more neutral to begin with.