They are free to use anywhere without worrying about the license.
I don’t think so. You can’t use some images from this site. No famous people or screenshots from Movies, TV Series, Video games, CD covers or anything similar that might be infringing on any copyrights are acceptable.
Yes, it’s possible. But I recommend to ask the theme author.
Great achievement! Congrats
Can you check our items? And list of these items? Thanks
It seems a custom theme. You can find more info inside style.css file.