Heyya! .... Yeh like the last person said, it depends on the subject and the example they provided like economics!
What i do, is i look at the content of what the syllabus is .... Like business for yr 12 has 4 particular topics that will be studied, i study each topic and than look at the outcomes and make sure that i know what the outcomes are about and students need to no ......... i tick them off as i learn how to do them. It takes a great deal of time. But worth it as in the end you know what you are talking about