If you haven't studied Dt at all start from VG and if you have done do latest practice manual specially for chapters cap gain, Pgbp And various entities.
Pm is really good for exam point of view u get good interpretation of the sections which appear in exam as it is.
i took vg sir classes way back in 2012..since then i have been studying his books for DT..but until now i havent scored much in this subject inspite of reading his summary and his practice manual 3-4 times.
Dear you are appearing CA FINAL exam not university exam.summary and practice manual alone will not work especially in subject like DT.thorough and detailed knowledge is must.
If u have studied then u r well aware abt the provisions the problem is in implications that u can do by practice manual n yes do all the questions of pm especially the topics I mentioned above n also do other chapters... For high score in Dt amendments, case law book and supplementary book all by Institute all this carry 40 odd marks so very important( rat lo) each and every point. Believe me u will score I have done it