Why am I getting .DS_Store files everywhere?

Every folder has a .DS_store file. They are there but should not be seen in Finder. Somehow on your system you have enabled ShowAll Files.

In a terminal session type

Then restart Finder or reboot.

Just to give you info on their purpose. They exist to store user attributes to the folder. Things such as the user's view option selections, and icon arangement locations. This is so each of your folders look and act in the manner you last left them.

I'm having the same issue. I have never run a terminal session. How do I do that?

It is simple as double clicking the Terminal application located in the utilities folder within the Applications main folder.

It is advised that you be extremely careful when typing commands into Terminal that they be correct, and do exactly what you need done. It is not a place to experiment to see what some commands will do, or to make typographical errors. As such, cut-n-paste your command lines if possible. Command lines that change or delete files can be particularly troublesome when a typo results in deletion of unintended data.

Thank you so much for the help. I will do exactly as you suggest.