This is an excellent user's guide to stochastic calculus and its important applications. I say excellent because it is well-written (clear and easy to read with a focus on the essentials as previous review said). I say "user's guide" because the author's get down to the nut's and bolt's of stochastic processes (concepts and related equations). I say "important applications" because they again focus on key "tools" such as Fokker-Planck equation and related stochastic differential equation, statistical mechanics, MCMC, turbulence, etc. - so there is something for everyone here e.g. physicists, financial "engineers", ME's and Aero's simulating turbulence (especially via PDF methods), etc. A few criticisms would be lack of "pixels" - they say a picture tell's a thousand words for a reason, hard to locate a term or definition or concept from index,...Overall, a very nicely priced/sized read and a must have reference for anyone working with stochastic processes seeking insight.