Where do I start?

Hi everyone! I'm super new here. My question today is, what should i start looking for to create a course. A step by step for me( dummy) will be greatly appreciated. What I want my course to look like will be a few videos of myself talking, then videos of texts which have my voice over It, some quizzes or practices for the students. What tools can I make use of ? I've tried looking everywhere on YouTube and Google but I still can't paste the pieces of information together. Feels like it's so hard to impossible for me who have no idea where to start. Thank you all ! Hope to get some replies here.