newbie looking for help on first ride etc.

hi im looking for a new bike and have a couple of questions.

First i have no bike experience and would like to start off with a 600cc bike.

i am 6.1 265lb and thats why i think a 600cc bike is better for me.

also i need a helmet which is the best? i like full face but price is not an option ill spend more on a helmet than on a bike if it saves my ass.  

First, go here to find the nearest MSF (Motorcycle Safety Foundation) course near you. Make a point to do this first before even looking at a bike. That way you'll have some basic skills to keep you upright and alive while learning your new steed.

We'd recommend looking at a bike such as a used Suzuki SV650 or new Kawasaki Ninja 650 to start off with.

We'd also recommend going to a local dealer to try on some helmets. They'll steer you in the right direction while you find a lid that fits your own comfortably. Arai, Shoei, Bell, HJC, KBC, Joe Rocket, etc., are all good name brands.  

I have read lots of good advise so far, but my concern is my size as well. I am 5'9" 165 32yrs old and in good shape. I feel I will be able to handle learning on a 600cc bike. I dont have any prferences, I just want some used in my price range(2000-3500) to start. Given my body type, is a 600cc too big to start? as it goes for the saftey course the US Navy requires us to have the courses provided by the Navy.
thanks  

If you haven't already, please read the New Rider's thread: http://forums.sportrider.com/70/591801/new-riders/new-riders-please-read-this-updated/index.html

For a 5'9" rider, a standard / older 600 bike will be large but manageable (SV650, CBR600RF3, FZ6, etc...). Plan on dropping it several times. It WILL happen.

As for newer 600cc Supersports- Don't! A new rider on a SS is not only an accident/funeral waiting to happen, it's one the Navy is specifically aware of and cracking down on.

If you do get a sport bike, you will have to complete both the BRC and SportRider courses within 60 days; if you don't, expect your safety POC and/or CO to become very friendly.  

thats the route im planning on going. my first investment will be in my helmet and visible mil-spec riding gear. my next bike will be more along what i really want. thanks for the advise warthog