Tijaska writes "Mobile devices are becoming more capable all the time, but their small screens and keyboards limit their usefulness. This article shows ways in which five buttons located on the edges of a mobile could be used in combinations to generate 325 or many more different characters, making a full-sized keyboard unnecessary. If that sounds like a tall story, remember the case of the retired 93 year old telegraph operator who used a Morse key to send a text message faster than a teenager could send it via mobile phone (see here)."
The best book on programming for the layman is "Alice in Wonderland";
but that's because it's the best book on anything for the layman.