You can attach files to a post, as many as you want and images too. Just click on the pictures/attachment icons on the right of a post and start uploading your files. This content has some example attachments below and pictures on the right. By default pictures are always arranged on the right of a content onless it's not a partial content in which case the first picture will be shown on the left and when post selected all of the will be shown on the right just like here, but you can move them to any place from CSS.
IMPORTANT: Please note that all pictures are Copyrighted by their respective owners (as noted below each picture) and are added to this gallery only for ilustration. All photos/pictures have been downloaded from DeviantArt.com and their respective owners can be found there. If you think your pictures has been posted in a violation of your work please contact me and I will remove the pictures immediately.