Guidance Sought.

I cleared Group I, however , could not clear Group II because of ISCA and DT. This was my first attempt.

I studied all the subjects from Study Material and Practice Manual.

My marks
ISCA 36 (expected 55)
DT. 34 (as expected).

Please provide me ground rules to be kept in mind for preparation of these two subjects.

Also suggest reference material for these subjects.

Please frame the guidance in context of Self Study.

Thank you!