Hi
Welcome to the forum. Since you're new to photography there is a lot to learn, in fact you never stop learning. First is to learn the controls of the camera and the basics of how shutter speed, aperture and ISO work. Then there is composition and then there is post processing, etc. Then as you get more knowledge you start refining techniques, approaches to take photos and better processing of the images.
Here is a link to one of many sites for basics but it explains things well I think.
Cambridge in Colour - Photography Tutorials & Learning Community
As for processing check out YouTube, thousands of videos. I typed in "basics of photoshop elements editing" and this is what came up. Some are better than others but something to work with plus you can bounce back and forth to try them on your photos as you follow along. Here's a link to what came up.
https://www.youtube.com/results?search_query=basics+of+photoshop+elements+editing
As for this specific photo. When we start out we make mistakes and aren't even aware that we are doing so. In this case as mentioned the shutter speed is too slow. You say you were trying to get some motion to show but in this case there isn't enough motion to stand out and has resulted in a soft slightly blurred photo. The processing is really dark and contrasty. There isn't any detail in the dark shirt and her face is quite dark. She is centered in the frame which in most cases is a giveaway that it's a novice's image because that's where they always put the subject. If you look at the photo there is a lot of empty space that doesn't help the composition. Thinking about the framing beforehand is best but things can be done in pp. In this instance cropping in and moving her off center and lightening the subject and tweaking the color will help. Slightly blurring the background more will help her look a little sharper in comparison. You can do a lot in pp but it's best to start with the best image and the resulting image will be better for it.
Since describing things is rather vague I've done a quick edit to show some of the points I've mentioned and posted it here.
https://www.flickr.com/photos/69407470@N06/13565577574/
Cheers
Greg