How to Exit Active Trades

I exit basically by reading the tape. So if I see a market that has used up all the gas in the car, or all the point and figure of a particular market, I will liquidate. If it does not act the way the market should act, then get out. What's your recommended trading book? Well, I recommend any book with price and volume that you can find. The white golf course in itself is fantastic. But I think that any book that you could read on price and volume, and how markets work, is the best book that I could recommend.