As a smart phone novice, I was looking for instruction in the area of iphone apps and Mr. Hirwani's Introduction to jQTouch is just fabulous!
His use of a series of small applications to explain different themes, the addition of panels and highlighting of information, tips for obtaining and displaying user information, etc. provides enough introductory knowledge to easily work with jQTouch. I especially liked the way, the sample Book Store web application is created step by step.
The creation of server side and client side database tables is nicely covered and accompanied with running PHP scripts. The use of these scripts for every step is quite helpful in understanding the topic(s).
Additionally, the list of different functions for accessing MySQL from PHP is very informative and greatly assists in understanding the code of the application.
AJAX technique is used for accessing information from server side database table to make the web application quite responsive.
Thanks to Introduction to jQTouch, I am now confident enough to create my own web application for Smartphones.