Tutoriales y Links utiles para comenzar con J2ME

Tutoriales en java.net
J2ME Tutorial, Part 1: Creating MIDlets
J2ME Tutorial, Part 2: User Interfaces with MIDP 2.0
J2ME Tutorial, Part 3: Exploring the Game API of MIDP 2.0
J2ME Tutorial, Part 4: Multimedia and MIDP 2.0

Tutoriales en TechRepublic
Making sense of the J2ME alphabet soup
Getting wireless with J2ME MIDP development
Building and testing J2ME MIDP applications with the Wireless Toolkit
Exploring J2ME: Building an expense tracker
Exploring J2ME: Building an expense detail form
Exploring J2ME: Using the Record Management System
Exploring J2ME: Sorting records
Exploring J2ME: Being a good mobile citizen
Exploring J2ME: Communication with the GCF

Databases and MIDP en Sun Developer Network
Part 1: Understanding the Record Management System
Part 2: Data Mapping
Part 3: Putting Data Mapping to Work
Part 4: Filtering and Traversal Strategies
Part 5: Searching a Record Store

Referencia
Mobile Information Device Profile Reference
Wikibooks - Java Programming