Someone called?
Well first things first OP, if you have yet to read it i recommend that you check out a thread that i made around a month back containing some advice and tips that i derived from my experiences throughout the preliminary and HSC IPT courses, along with a brief study guide on the most essential stuff that you should cover throughout the course. That should help you more or less gain an understanding on how to approach the subject effectively
http://community.boredofstudies.org...information-processes-technology-student.html
In terms of studying for IPT, it largely depends on the individual to be honest. In my opinion IPT is a subject largely based around consistency, cramming will only get you so far. I recommend that you continually make notes on a regular basis and do weekly content reviews, constantly keeping the content fresh in your mind. You will find that after a while the knowledge just sticks with you and becomes more or less second nature and that really goes far when it comes to exam time. Study using the Davis Textbook and the Excel textbook. A large majority of students say that Davis is the worst textbook for the subject as it goes into things way too extensively. However his examples and activities are absolutely excellent and go a long way in allowing you to gain an in depth understanding of the content. Excel on the other-hand is great for both cramming and learning the content in a concise manner. As you may have also heard, making notes off Davis is quite hard, hence when making notes off the Davis textbook have the syllabus next to you and refer to both the "students learn about" and "students learn to" sections and highlight what is relevant. As seremify noted though, making notes is not completely essential provided that you have a good teacher and hence a good grip of the content which is taught (iirc my brother only had brief class notes and managed to score a 93 HSC mark in this subject)
While i personally wasn't too huge on notes
(i did have a set of cram notes and some stuff from davis activities) i found that i constantly listened in every class and asked questions whenever i didn't know anything, i also related all of my IT content to real life situations, in my opinion doing this is absolutely invaluable and a great way to remember what is taught to you. (i.e. i remembered the information process of storing and retrieving simply by saving and loading in a video game, and expanded upon that concept in the exam room). After lessons i ensured that i could remember everything taught to me in the last 3 lessons with allowed the content to stick.
As seremify mentioned, doing activities and past papers for this subject is also extremely important and honestly the main way i learned my content in IPT. Leading up to the HSC i did pretty much every trial and HSC past paper available to me and got them marked by my teacher the next day, this allowed me to understand what i didn't know about the subject and get a grasp of the scope of knowledge needed to answer questions
(i.e. i figured out that i didn't know enough about communication systems when i constantly got 1/2 and 3/4 in most responses, however i figured out i had a good grasp of decision support systems when i was getting 20/20 in most sections), it also allows you to build exam technique which is the cornerstone of doing well in this subject. Throughout the year try doing the Davis, Excel and Powers activities and hand them into your teacher to get feedback on how good your response is and how it would do under real exam conditions, i also did this and it was extremely helpful. As MrInoeverthin mentioned "IPT is solely dependant on your understanding and how you can implement real life situations within a scenario" and activities/past papers let you learn how to do just that whilst allowing you to mentally re-enforce your content
As for how long i personally spend on study. In terms 4 and 1 i spent 2 hours a week on IPT at best
(which i kind of regret in hindsight, i ended up not knowing much about the subject and consequently hating it). In term 2 i spent around 5-6 hours a week doing activities and making notes at home which sufficed, however i did dump around 100 hours in the period of 1.5 weeks into the subject when i had to do my hand in assessment task. Leading up to trials i was putting in around 20-25 hours a week
(97 in CSSA Trials) and leading up to the HSC i was putting in around 20 hours per week.
Sorry if i rambled a little, i am quite tired haha.