She talks about choosing the best style according to one's figure and then she goes on to talk about fabrics suitable for skirts. I liked very much the chapter on "Getting the right fit" where among others one can learn to add pockets, walking ease and linings, or change the grainline of a skirt using three alternative ways, dependent on the desired result!!
The chapter on construction guidelines was my favorite, though. This is where Marcy Tilton shows everything there is to know about each step of the process. She includes information on cutting, marking, pressing, seams and seam finishes, darts, pleats, gathers, side-seam pockets, kick pleats and french vents, zippers, waistbands and hemming.
Note however that the information on lining skirts is limited so if one is not experienced on the subject I would recommend "Easy guide to sewing linings" by C. Long that I think is a valuable addition to your library as it contains everything there is know about lining not only skirts but pants, jackets, etc.