The presentation by Adam Nash on personal finance for engineers emphasizes the irrational behaviors and biases that affect financial decision-making, highlighting the importance of self-awareness in managing money. It outlines key concepts such as behavioral finance, the significance of liquidity, cash flow management, the benefits of compounding, and the recommendation for boring, long-term investing strategies. Additionally, it advises against high-risk debt and stresses the importance of saving and modeling financial behavior accurately.