It is a mock test series module which covers the SBI PO prelims exam. This course is divided into two parts E-Test (Total 16 Prelims full mock test) and Analysis (Current level of preparation). These mock tests are prepared by "S Chand", one of the reputed brands of competitive examination domain.
Yes, it is definitely useful for those who are already taking coaching. It prepares them with the help of astute mock tests. E-Tests in it gives you a real exam like simulation. Its analysis is far more in-depth than the one given by usual coaching institutes.