Misty on Nostr: I need open a can of worms. On #Nostr, how do I sell or provide full-length guides or ...

I need open a can of worms.

On #Nostr, how do I sell or provide full-length guides or courses available for download?

If this isn't possible, which client allows me to #publish full-length guides/books/and courses that include videos in one post or one spot?