This is the NN-MX21WF/NN-YL21WF/NN-WM21WF microwave oven user manual and selected recipes. It mainly introduces the precautions for microwave ovens, the characteristics and cooking skills of food, the selection of microwave oven cooking utensils, the installation and placement of microwave ovens, the function indicators and control panels, the operating methods, cooking methods, microwave oven heating principles, tips, home cooking, microwave oven cleaning and maintenance, before requesting repair service, about repair service, problems, causes and solutions.