I'm interested in building "computers", and by "computers" I mean simple things that have flashing LED lights, and beeping noises. I did a little of this a few years back for school. I know basic binary algebra, and logic gates. Can anyone recommend me some books or website? I can't seem to find anything, google searches either yeild something way over my head, or something about building gaymin rigs.

http://en.wikipedia.org/wiki/PIC_microcontroller

^^^

This site may be of interest. It's a Transistor-transistor logic homemade CPU, with a PDF schematic diagram at the bottom of the page. http://www.bradrodriguez.com/papers/piscedu2.htm