When reading, one should focus on the end goal: learning the law in order to apply it correctly in an exam. Shortcuts in reading may be made too: having an idea of a case's facts and legal principle mean that the case report may be read much more quickly with more focus on the key points. This is not something which is taught; rather I have had to learn this myself during my law degree.
Q. Do we have to abide by all international treaties we have signed (are party to)? A. No, just so long as you attach a Statement of Compatibility with Human Rights to any legislative instruments you introduce to the parliament... Human Rights Law Centre