It's important that when reading coverage of court cases to sort out reporting from opinion -- many news organizations will often provide both kinds of information, and you need to consider them separately, though both should still be evaluated.
Reporting aims to share the facts of the case -- who are the parties, what is at issue, what happened in previous decisions, what was the final outcome? You should evaluate reporting to factual accuracy and bias. You do not need to take reporting entirely at face value -- sometimes, reporters make mistakes.
Opinion, which may also be called commentary, is just that -- one person's (and they may be a lawyer, a journalist, or someone without legal training) thoughts about a case. It may be based on legal argument or it may not. All of these issues should factor in evaluating an opinion (which is different from a Justice's opinion, though you may want to use those as a model -- sometimes the justices agree that an issue is wrong or right, but they have different reasons for why they ruled one way). Does the person cite other cases or research that you could look up and validate? Are they coming from purely an emotional or personal stance?
There are many resources available for finding news coverage, from databases to individual news organizations. See a partial selection below.
Broadcast News
Cable News