Fletching arrows isn't that difficult at all. The main thing you will want to do is prep your shafts correctly. Make sure you get all of the glue off by scraping them thoroughly, not so hard to take the finish off, but hard enough that it takes the glue of and leaves you with a smooth shaft. I like using the backside of a butter knife. This way, I don't dig into the shaft and possibly ruin it. You have to becareful during this step. Once thats done, go over the shaft with a real fine sandpaper lightly to remove any other glue and to rough up the surface a little. Finally make sure you clean the shaft well with denatured alchohol.

After that, fletch away. Some good glues are AAE Fastset gel and gorrila glue I have found, though they do have a tendacy to be more difficult to get the glue off. You don't need much.

Offset and the amount of helical is dependant on the jig you use. You can get a clamp with either a striaght off-set or a helical and can adjust the clamp on the jig until you get the desired "pitch" you want.

I started a couple years ago and wont let anyone else do it. Its nice knowing you can repair your fletching at home in a minute rather than toting your arrows to a shop all the time, especially in the middle of hunting season.