We'll start with editing…
Do you see that pencil button that's blue?
And it will take you to this screen, where you can do everything that you could do when you first started your guide.
Here's how to delete unwanted guides…
I don't want that guide up anymore. Do you see the big red button that says "Delete"? If you click on that, it'll do this thing where it deletes itself!!
There we go!!
The creator of this guide has not included tools