There are many many websites on m-learning, some good and some bad. Listed here are some of the most interesting ones.
Really useful up-to-date website. Read the latest discussions about mobile learning.
Requiring students in an introductory course to use PDAs. Taught the IT department how to implement them in the curriculum
Briefing document by Jon Trinder: Department of Electronics and Electrical Engineering, University of Glasgow.
Here are several short videos relating to m-learning case studies on u-tube and are quite informative.
Work of the Learning Technology Support Service (LTSS) in the field of PDAs and mobile learning. Andy Ramsden from Bristol University
Article by Laura Naismith, Peter Lonsdale, Giasemi Vavoula and Mike Sharples, University of Birmingham.