Which book to follow?

See.. instuite sugg is best to know how to present answers. But reading  that itself if you don have time means then all other author books and special books for CAPCC by gru krupa padhukaa saravana prasath wont be possible. Since these books take more time than our material. But instead of reading from institute material which is vague, other books are best. But it ll take time. so no choice.. better know which are all the important chapters and concentrate on that using saravana prasath or any other padukaa books.