If you need help with preparing contents, you should probably check this list of blog articles.
There are 6 articles & each one will help you to towards creating your awesome online course.
Its written for teachers, who have never created content before. So, trust me. You can complete each article in just 10-15 min. Here are the articles
Create a course by knowing your students dreams & aspirations. Learn how to find it.
Turn the student dreams into an online course. Create a goal & syllabus
Create free video courses using copyright free contents from Youtube. Use it to fasten content creation.
Learn how to create an attractive PPT course for Free & without any design skills
Learn how to create an attractive PDF course for Free & without any design skills for free
Use a free video recording tool (Loom) to record HD videos for free very easily.
These are the list of articles for course creation. This will really help you get started & make attractive awesome courses.
So, now go ahead & login to your admin dashboard & create your online course.