when writing a story how can i switch my newest post for the story so it's on top?

You can't. And that would be too confusing anyway. It's easier if the oldest post is on top so we don't have to go to the last page and work our way backwards. Just let it go the way it's supposed to.

I have a question: For trying to keep low profiles, why do we wear suspicious, black coats?

Answer: The Darkness in the Light and the Light in the Darkness, does that answer your question?

You can't do that and it's much easier just to update and have the posts go down in chronological order

Just put your entire story in the first post and just reply to the topic saying "Updated first post with: [insert whatever it is here]."

Link the new chapters to the first one... It's easier, people will simply need to click and boom you're in the next chapter