Most beginners place trades without really understanding what happens after they click Buy. This second volume of the Must Know Trading Terms series pulls back the curtain on the mechanics of markets — the order types, the matching, the venues, and the structural rules that quietly shape every trade. Across twenty-two short chapters, Personal Trading Coach walks you through the orders themselves (market, limit, stop, trailing stop, OCO), the things that go wrong (slippage, gaps, partial fills), and the bigger market structure most traders never see (order books, dark pools, market makers, circuit breakers). The approach is friend-to-friend rather than instructor-to-student. Each term gets a clear definition, a worked example, common mistakes to avoid, and a wider perspective. Visual diagrams accompany the most important concepts. No jargon for the sake of jargon, no false confidence, no pressure toward any broker or platform. By the end of this volume, you'll understand the plumbing of markets — knowledge that quietly improves every trading decision you make from then on. For educational purposes only. Not financial advice.