A network tutorial please

Hello guys
my cousin and me bought 2 books of j2me (oreilly and manning), well we learn make gui, forms, actions etc, but about of the chapter of network, well i see that is simple, inclusive the examples dont work according with the books to 100%(use midp 1.0 and only a request and response examples about http)
well the question is this,
where i can download an excelent or nice tutorial related with this in special, (networks)
one:
ie: with my j2me(cellphone) go to a server (tomcat preference) to make some operations, shooping cart, check info of db,etc
or a recommend book of your experience (i dont know if exist special books about j2me and networks that teach this topic more deeply)
two:
i want control a PLC with java , so my cellphone will be my client, the tomcat the server, and of course the plc the final tool :p
my problem is between j2me and tomcat,
if a engineering or other professional have some experience with this, please help me
in others words, examples and tutorials about of commnucation client/server tomcat and j2me
thanks a lot for your time

I am a certified network engineer, currently work on a boradband hyrbid network, and have a college degree in network engineering and administration.
What do you want to know, and I can give you the basics. Networks can be anything - satellite, earth-based, and can be wired or wireless as well as mixed of all types. There are small, medium, and large networks, different protocols, hardware, and many different views.
What do you need? What do you want to do with a network - that will help more than anything else.

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