Seems to me there's quite a few on this bb that started out with very little to no experience. I agree with Timebandit whole heartedly! Just use caution and common sense. Take it slow, learn at your own pace, lessons are definetely a good idea.
I bought my 26S with very little sailing experience, yes I started out with smaller sailboats, and went out on friends boats, and I did have a lot of power boat experience, but sailing is a lot different.
I bought my 26S, then took a two day ASA 101 Basic Keelboat class, that was totally fun, I'd recommend it. Even after that I was quite nervous at first taking my boat out. But right away after the first time out or two the confidence builds. Before you know it you'll be giving advice to other newbies. Taking someone with experience out with you at first will sure help.
Another thing that helped me was the fact I worked on my boat for three months before I ever took her out. I fixed and upgraded stuff, cleaned and polished, etc. I stepped the mast several times, raised and lowered sails, went through the motions in my mind, while sitting in the cockpit. All that allowed me to become very aquinted with the boat on the hard, building confidence before even splashing her. That process in itself was a lot of fun for me.
Sailing can provide a lifelong learning experience, which is one of the many great aspects of this activity.
My advise is, GO FOR IT!