There are not that many tutorials for JME SDK3 as it just little different from JME WTK 2.5.2 and if you been SonyEricsson emulator user you would see minimum difference. It safe to say that you can learn from previous tutorials, as they will work on new SDK, and later on just look up topics like LWUIT, or multimedia on mobile devices.
For start you can have look here
peter_budo
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