This book should be amongst the first read by any aspiring equities investor. The frameworks presented are practical, clear, and relevant, and while the topics will be elementary for the more seasoned investor, the lessons are paradigm-shifting for the beginner.
The first four chapters are the least impactful, and can be skipped. Any corporate finance/valuation course, and numerous other books or courses on business strategy, will offer a more robust treatment of asset and business valuation and company competitive advantage. Chapter 3 has an interesting decomposition of share price into (1) the present value of a company's invested capital, (2) the present value of a company's competitive advantage, and (3) the market-implied EV of growth. The first is essentially the company's WACC multiplied by total capital; the second, the ROIC - WACC spread multiplied by total capital. The third is the remainder of the share-price. I've never seen this generate alpha, but it seems to be an insightful exercise and an interesting way of understanding edge and growth.
Chapters 5-9 discuss identifying mispricings. Chapter 8 is the chapter most worth reading, because it contains a thorough treatment of the concept of "catalyst", and the various sorts of edges one can have as an investor. It also summarizes the claims made in Chapter 5-7. Essentially, the reader can take away clearly that for you to make money on an idea, (1) Info must be adequately disseminated, (2) It must be processed without systematic error, and (3) It must be aggregated/reflected in price information.
The real gems in this book come from Ch. 10 and Ch. 11. They offer insights on how to pitch to a PM from the perspective of an extremely busy, mentally scattered PM. First, adhere carefully to both the objective and observable subjective criteria that your manager might have for an idea investment. Critically, however, you might need to dig further and figure out what their "hidden" subjective criteria are, and adjust your security selection/idea presentation process to meet those criteria. In other words, don't pitch something that doesn't fit your PMs style. Ch. 11 contains the ideal structure for a pitch - 30 second hook, 2 minute "drilling" of info, and then command over sufficient facts for Q&A. Many frameworks and mental models (Steinhardt and Toulmin) are explained, which I find helpful in structuring my pitches.