Hi devilsnare. Welcome to the forums.
No, don't assume that because you see an image on Google, you can just use it in your own projects. By default, images, text and so on are copyrighted material. So you need to check with the owner and get permission to use something that's not your own. If owners have given permission on their websites for the content to be used freely (like buttons etc.), then that's fine. But otherwise, you are basically stealing their content, and could get in trouble for it—or caught in devil's snare :shifty:—if you aren't careful.