All of my WordPress themes are licensed under the GNU general public license (https://www.gnu.org/licenses/gpl.html). You are free to modify my themes for personal or commercial projects as you wish to fit your purposes. You can use my themes on as many sites as you like as it is GPL licensed.
The stock images used on the demo sites are for demonstration purposes only and are NOT part of the theme package. All images are subject to the copyright of their respective owners.