A guide for Photoshop

I'd like to introduce to you a really outstanding guidefor some tips of Photoshop. The guide is done by a designer, a really genius designer. But I think to do such a complex task like this guide, you should be an artist, a painter rather than a designer. A importamt note is that the final image is done with just a mouse ( with 3 buttons) and the help of Photoshop. It means no photographic, reference images. The link to the guide: http://www.wade.pwp.blueyonder.co.uk/tutorial1.htm
The images are done step by step: