Here are a few of my favorite videos that are older. The scorpion video is what got me started. Dang I miss the scorpions, wouldn't mind having another one just caus'

http://www.youtube.com/watch?v=Xxx7pvA4Y_w

here's two from CTB that i think are rad.
http://www.youtube.com/watch?v=Kg5GkxI5BSg

and this one is awesome!
http://www.youtube.com/watch?v=xDWres2b7Ss&feature=relat...

even though they are a bit older, they are still awesome

I want to know more about Arc's ....They look so easy to fly or everyone in the videos I've watched are just awesome

They are awesome. They make learning easy, and they are very forgiving. They help build confidence especially in gusty inland conditions

That would be like NW Indiana avg. 5/10 w gust 15/20 mph.
I'm 160# with those kinda conditions where do I start for size.

Umm I'm 170 pounds and winds here is generally 18mph gusting to about 27mph. I use a 19m charger. To get started on arcs I would only get a 15-16m tops to start out with your average wind speed. That'll at least get you moving in 12mph on a grass surface. 15 plus will start to get you air time.

I would think starting with a 12 to 13 meter arc would be best in your wind to learn how to ride. When you get really confident that'll be a good high wind kite for 25 plus winds, then you could get a 15-19 for 10-25mph as your low wind kite.

5-10 mph winds won't really get you moving unless you are on a larger kite on a hardpacked flat surface like the beach

This is for a landboard though, I don't know the exact wind range for buggying or standing up on water. Those ranges would need to be tweaked by somebody in those diciplines