I really like this tutorial in that its very clear what you need to do to accomplish making a pinhole camera. The fact that its a DIY project with things that can be easily found throughout ones home makes it more appealing. The images are clear and in order from step one all the way through the last step. This is one of my favorite tutorials of all time!
Below is a link that goes into more detail about the steps of this process.
http://www.fecalface.com/SF/index.php?option=com_content&task=view&id=441&Itemid=92
I would really like to make this! Good find.