The article "Controller's Guide to Costing" covers different methods of costing in business, such as job costing, process costing, direct costing, standard costing, and activity-based costing. It discusses the advantages and disadvantages of each method, how they work, and their impact on financial results and inventory valuation. The article also explores costing systems like LIFO, FIFO, and average costing, as well as throughput costing, joint and by-product costing, and target costing. It provides insights into how these costing methods can be used for cost control, pricing, budgeting, and decision-making in business.