Knowledge is the secret of everything, you can’t do anything until you get proper knowledge about that thing. You get knowledge about different things in your complete life from your date of birth to your date of death. But you need a teacher to know about everything and a teacher should have proper knowledge before teaching, teachers are valuable assets of the world, no one is perfect without knowledge.
So if you want to be a perfect teacher, you should have proper knowledge about the subject you teach. You have to spend your valuable time for this purpose, usually people use different books for this purpose, a medical teacher use a book of Biology that contains thousands of pages with thousands of different topics, first open the book, find the topic, and some other things but it takes time, sometime you waste your many hours on books.
So what you should do now, one thing, I’m recommending you use videos. It’s a time saving way, suppose if you’re teacher of computer hardware and a student ask you to how to make a keyboard, don’t read one keyboard topic again and again, just see how anyone make a keyboard, you’ll surely easily learn how to make a keyboard. Here’s I’ve gathered some video resources for the teachers, hopefully you’ll find useful videos to increase your knowledge, check these resources below.