Refining is useful for getting upgrading feathers (called Talic Stones)
The talic stones are only obtainable through refining.
First of all you need ores.
Here's the guide on how to mine :
http://rfbase.com/modules/newbb/viewtopic....id=1124&forum=8
At the same place where you buy mining equipment is where you refine. (if you dont know where that is, that's also in my mining tutorial)
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I forgot to say that once you refine, dont forget to pick up whatever you refined inside that window under the ore refine button.
Ok now that you have refined ores. you have a lot of these stones (or maybe it was worth you while and you got a talic stone) you dont know what to do with. Sell em to the local store for gold.
THen Convert them to CP. (you'll usually get money back to how much you spent trying to refine ores.
The Gold-->CP convertors usually are near the miner sellers.
Ok after all this hopefully you got some talic stones.
Zero has made a nice guide explaining what each talic does.
http://rfbase.com/modules/newbb/view...id=540&forum=8