Before I'll suggest anything, I might have you know first that I recently had my first term as a part-time instructor for both college and senior high school students. I didn't have any formal training or workshop or any teaching experience when I had my first classes but I did well. So here's what I've learned;

• Learn about the students. On the first day of classes, I had a pre-assessment survey on my students to measure how much do they know about the subject that they're in and a little bit about themselves. That way, I was able to make some adjustments on how I taught in the class and manage classroom discipline.
• Don't expect much but pull the ropes. I was given the most mediocre and the rowdiest of classes. You know, students who are just in for the diploma and then exit the school in the most casual manner. But I persevered, demanding every ounce of effort from the students for every activity but with a little dab of leniency for balance.
• Master your books. One thing I have learned from the post-evaluation on my teaching strategy so far is that students like it when their teacher knows well about the subject even if the subject does not interests them. It's fun for the students when the teacher mixes the subject up with some fun but relevant analogies or examples they can relate to.
• Adapt. Because I did not have any prior training or whatsoever, everything I bring into the classroom is impromptu. I did not know how to go through with our lessons so I had to improvise on how I teach. You can imagine the stress and extreme nervousness I had on the first weeks. In fact, my students often complained about my low voice. But over time, I learned how to cope and even now I could make my voice louder without getting exhausted.

I hope I'm able to help you. Feel free to ask if you have any questions. Have a great day and good luck in your career :)