Maybe Educabana isn't going to be the premiere storehouse for available lessons, but we can provide some rigorous and relevant resources, anyhow. If you use a lesson, click an ad or join our student or teacher subscription levels.
If you want to add a lesson, you must join at least the student level. Then, you'll be able to click on the "New" button at the bottom of the category in which you'd like to post.
If you'd rather try to sell your lessons, try Teachers Pay Teachers.