I have just started my first fair isle project - knit in the round. It's this: http://www.popknits.com/index.php/pa...ir_isle_beret/
If you're comfortable working in the round, doing fair isle this way should be no different than working it flat and may just be easier considering you don't have to work the "wrong side" (no purling).
It's just as easy as picking up a new color and knitting it in. Knit loose, easy stitches and keep your stitches stretched out in order to ensure that the floats are loose enough. I can't remember where I saw the video for that, but it's probably the same one that Mirl56 recommended. Also try searching on youtube. Maybe this could be a jump-off point: http://www.youtube.com/watch?v=O2L4F...D24824&index=7
You bring the color in when it says to start it and you'll carry it until your done using that color. Then cut it off leaving a good size tail to weave in later. If you use that same color again at another point in the fabric, just start it again. I know what you mean about the lack of videos showing when and how to bring colors in. Most only show the actual knitting.
I just started this hat on Saturday and I'm sure I'll finish it this week. I'm only working on it at home as there's lots of yarns and I can't carry that easily. You can do it.