Bertens's intro to literary theory is the most intelligently written, most comprehensive history of the academic study of literature. A careful reading of this book will put you at a vast advantage in any academic environment, whether at undergraduate-, or (selectively re-read for a refreshment of your argumentative capacities) at PhD level. This book is better than most literature courses will ever be. You simply cannot afford to miss this. Also, in contrast to my fellow reviewer T.Bernard I have always found the index to be perfectly adequate in its detail, but you should probably get the latest edition just to make sure.