Two of the beautiful things about Scrivener are its automatic saving of the working project and its automatic backup routine.
Open, write some, wait a few seconds, close the project, and all you wrote is safely both saved and backed up.

What are these files? - - - Does it mean my sync failes somewhere and backup is being created? Or are these the extra copies made for conflicting files? Neither. They are backups, copies of older versions of your project, made for safe-keeping, usually every time you close the project (depending on...

You simply change the section type in compile so it is left justified.

Have you done the tutorial, the part about compile?

Do you have more than three Windows devices on which you use Scrivener?

Back-ups are for safe-keeping. You don’t use them unless something goes wrong and you need to go back to a previous version. To work on two devices you Save the project in a cloud service, like Dropbox, and then just Open the project on the other machine. Simple! BUT!!! You need to make sure that an...

If you just want to split, don’t select any text. Just put the cursor where you want the split.

The basics of the compiler is covered in the interactive tutorial. Did you look there?

In the binder you select the level you want to display in the corkboard.

Have you done the interactive tutorial, found in the help menu? If not, do it! It explains all the basics.

Why not use the new beta version, and buy version 3 when it arrives?

I don't think so.
Why do you merge them if you essentially want to retain them as a kind of sub-parts in the text?
Why not simply use scrivenings view and display the titles in the text?

Select the word, then alt-click.

When you merge two documents, the two becomes one and can only have one title. To me it sounds as if you are moving documents, not merging. From your description it sounds as if you have a document with sub-documents, and you want this whole structure to be a part of another document, right? If so, ...

Randall Lee Reetz wrote:this really doesn't do what I want, what any user would want.

I am any user, and I wouldn’t want that.
When a document was edited is of no importance at all to me, and even less so the relative order between many documents in a project.

Have you restarted your Mac recently

Which delete key?