The wide range of student age groups and cultural backgrounds will lead to challenges in teaching them.  However, all of us have similar basic needs as humans, so the relation between the different groups can be bridged on those grounds.

Guided notes allow students to see which items are relevant to keep taking notes on.

We all require relevance in what we are learning, to be able to understand how it will impact our lives.

Understanding the different ways people learn and understand topics will be beneficial to be an effective teacher.

Interesting to see how our brain works and how we retain information.

There are so many different types of testing to see if the students are learning the material.

Assessments are critical for understanding the students are understanding the material you are teaching.

Asking questions to open up the class to think about the subject matter will increase their understanding of the subject.

By changing the delivery method of the content, you will be able to reach the different learning styles of the students.

It is very common to worry about if we are not ready for teaching.  I guess we will just have to adapt and grow as we go along.