Let me review the completed lesson. After fixing any problems, and assuming it's reasonably good, we'll post it. Your name will be be given prominent credit for the lessons and sections created by you. If you're game for more, we'll start the process over again. If there's some systemic problem or misunderstanding, we can catch it early.
Later lessons can introduce more advanced topics.
Nearly all sections should end in a quiz, and the quiz should stress some critical aspect of that section. Simplify where you need to. Make the text as clear as possible. Be careful to follow normal HTML rules. I found some serious errors in my posted files with Weblint.