Hello

Recently I've been started to get curious about mobile development, specially Geolocation applications, how do they work and stuff... Can anyone point me in the right direction? What should I study, any references and things like that... Specially the following:

1.- How to implement the imagery (like, can i take it from google maps or something)
2.- Is there a standard database to connect to to determine the device's location, and how to make the device location-aware
3.- How does the coordinate system work

Thanks in advance!!

You need to be little more specific on what type of device development you are looking at Java ME/Symbian/iPhone/Androoid.

You should have a look at openlayers

Since Java is the one i've got more experience, i'd like to start in J2ME

Since Java is the one i've got more experience, i'd like to start in J2ME

Can I suggest then you do it in Android as it is also Java based and has better ready-to-use libraries then JME? On top of that JME is very unforgiving because of different devices, plus you do not want to develop for dying platform.
An Android example

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