The way i like to study for IPT (i ranked 2nd by like 1%) is just past papers and reading over syllabus notes.
I have noticed trends, such as a majority of sections ask for social and ethical issues which tend to range from 3-5 marks, so be familiar with those
Dataflow diagrams aren't as recurring, but being familiar with that, along with context, will help (most cases, its a 3 marker to draw one, and anything on the paper can score full marks, as long as it makes sense)
and to top that off, just go into the exam and manipulate the questions (if it asks what something is, repeat the word in the answer, because 9 times out of 10, that what it actually is!!) e.g. a content provider provides content (according to the textbook, but knowing what the is content, is where the syllabus notes come into play)