Hi Jazzys mom, welcome to the forums!
I'm not sure if you've done so already, but you can download a free version of ArtRage, ArtRage Starter Edition from www.artrage.com/artragedown.html which is good for getting a feel for the way a range of the tools work, and how the software works in general.
ArtRage ( both versions ) can export its paintings in jpg, bmp, png, tif and psd standard image formats, so you can use things you create in ArtRage in other software which supports those image types. It's always a good idea to keep an artrage format painting file of your work, as these remember things like paint thickness and wetness and so on, should you want to make some further adjustments later on, but to export an image, go to the File menu, choose 'Export as Image' then select the type and the filename.
I hope that helps! Feel free to ask if you have further questions, you can also email me directly at email@example.com