8.2 is not available, 8.1 is... as well as being able to update some things to 8.2 content but there are only hybrids.
As far as 8.1 goes,
There is a guide...
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There are tools to work with on the server...
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There is a help thread for your questions when you get stuck...
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There is a developer team search thread when you decide you can't do it...
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All of these are conveniently stuck at the top of these forums.