This book is presented in the form of questions and answers and includes solved problems as well as supplementary problems. Starting from differential geometry, the book develops the basic equations using both conventional (differential element approach) and variational formulations. Equations are developed in the general curvilinear coordinate system and particularized in later chapters for shells of special shape. Their limitations while particularizing for shells with rectangular platform are explicitly brought out. The numerical methods that play a very significant role today have been dealt with elaborately, with a complete listing of programs written in FORTRAN.