When starting a new course take time the first class meeting to get the students settled into the procedures that will be followed.  By sharing the operating format and giving examples the students will be able to see how you are going to operate the class as well as see how they are going to fit into it.  Consistency is a must so by establishing a routine for starting each class you set the stage for getting into the content or lab working effectively and efficiently.

Make sure to spend some time talking with the students and establishing rapport with them from the first class session forward.  This effort will pay off throughout the duration of the course as it helps the students to see that you respect them and in turn you will earn their respect.  This is a win win setting for everyone.