This flickr photo album contains some of the most illustrative images, I ever uploaded on internet. The album has copyright free images, which means you can these graphics any way you like. They are growing rapidly and I expect the number of photos to cross 100 this week.
Till then here are some of them just to showcase:
These images are completely free. Use them in any way you like and they won’t cost even a single cent.
Feel free to ask questions, send feedback and even point out mistakes. Great conversations start with just a single word. How to write better comments?