The only advice that anyone should be offering you is GET SOME LESSONS ! If you'd had a lesson you would know that at your level you can not launch a 14m kite in 7 knots of wind.
Kitesurfing is a dangerous sport and we all have a responsibility to ensure the safety of not only ourselves but also others, especially beginners, otherwise you will just end up another fatal statistic which impacts the sport for the rest of us.
Apologies if i sound negative, i'm not trying to deter you, it's great that you want to learn to kitesurf but you will advance much quicker with some hands on lessons. All too often people die from this sport and you need to respect the power that a 14m kite can generate even in 12 knots of wind !
BC, You ain't gonna kill yourself in 7mph. And yes, although not the safest route, you can teach yourself. You start with a trainer and play with that for a season. Instructional videos are your best bet, so you can SEE what they're talking about, especially ones that emphasize safety.
All that said, teaching yourself can waste a whole season. Taking even one lesson by a pro will accellerate your learning time exponentially. Expect to pay $200 per lesson. Money well invested.