What an excellent question. A court trial is a step in our guaranteed right to due process in a criminal case. Each state has a step by step procedure in place to comply with this Constitutional...
No, it's not. A trial in a court is preferable because there are rules for procedure and evidence, conviction or acquittal. In a trial in the media, there are no rules (especially if you use "sources...
Media? You've not supplied nearly enough information to give a concise answer. What you need to do is read the instructions that came with the medium. For agar, you usually mix it with boiling water...