This book is aimed at those who wish to advance their knowledge and expertise in financial modelling by addressing common problems that occur day to day in the world of business/decision analyses, forecasting, and valuations. Building on the sister book, An Introduction to Financial Modelling, this book begins where the other ends considering typical issues and traps in cashflow forecasting, inventory modelling, depreciation calculations, debt sculpting, rolling budgets and charts, and valuation construction, to name just a few relevant topics.