We all have a lot of things to do! So let’s get moving! Let’s…

get {something} {past participle}

get the door painted

get the claim processed

get his eyes examined

means to cause the {something} to become {painted, processed, examined, etc}

“Things” means loosely “items on an agenda”.

If you cause things on an agenda to become “done”, that is, to become “accomplished” or “finished”.

If you don’t get things done, you are said to be “ineffectual”.

Someone who gets things done is “effective”.

And after you get things done, you say:

Well, you go on checking what I’m posting here for you until I’m done or until I get ready preparing for our new school year! Hehe…

https://ell.stackexchange.com/questions/81873/what-is-the-meaning-of-to-get-things-done