Dear, preparation of journalism is not a big task to achieve, just you need to read thoroughly these useful books and after understanding the whole concepts present in our syllabus, then consult the past papers of journalism along with checking your answers.Furthermore, one need to discuss all the topics, past questions and expected questions too with friends.

The books are 1) Journalism for all by Dr Mehdi Hasan, and his cds also helpful.
2) Mass communication by M Imtiaz Shahid.
3) Mass communication by Wulber Schramm
4) An introduction to Reporting by Frank jossi