These sources provide a technical and pedagogical guide to quantitative finance, focusing on the stochastic processes that govern market behavior. The text uses the concept of the random walk and Brownian motion to explain how asset prices fluctuate over time through a combination of randomness and drift. By utilizing step-by-step Excel tutorials and mathematical proofs like Ito's Lemma, the material demonstrates how to model volatility, correlation, and risk-neutral pricing. The modules also explore complex topics such as Value-at-Risk (VAR), barrier options, and the numeraire effect, which accounts for how different currencies impact profit and loss. Ultimately, the text serves to bridge the gap between theoretical probability and the practical realities of dynamic hedging and derivative valuation.