well welcome to the site and to the bow hunting/shooting world
its a great sport
as for advice, like others said, shoot as many bows as you can
BUT FIRST, get to a pro shop and have them measure you, to try to fit you to a bow
get your draw lenght sized up, and ONLY shoot bows set up to that length
or you will NOT feel the benefits of a bow set up to fit you, no matter the name brand or price range
the best bow to buy these days is the one that fits you best and feels the best in YOUR hands
dodn't get caugth up in the hype about needing the latest and greatest
as for broadheads
well I won't knock a good fixed head, but these days theer are tons of great expandable heads out there too
only reason , so many folks use expandables these days si, its a LOT less work to get them to fly straight/like your target heads
many fixed broadheads, need a bow in tune and set up to match them to make them fly great
either one in a non vital place will leave a deer lost
either one in a vital area will result in a dead deer 99% of the time
also, don't get the idea you need a 70+ lb draw weight to kill deer
anything over 45 lbs is fine, as long as you keep shots under 50 yrs(heck the idea of bow hunting is to get close, many bow hunters draw the line at 40 yrds or less)
get to a good bow shop, ask for them to either help you get started or even maybe recommend an archery club(advantage is they have targets there, so you don't HAVE to buy your own, or have to find a safe place to shoot then, and many great guys hang out there that would most likely take you under there wing to help you, but be wise, that not all bow hunters will tell you correct/accurate info, many will just tell you what THEY DO)
the most important thing in bow hunting is PRACTICE Ppractice practice, and more practice
it helps train you to shoot well, and keep your form correct every time you shoot!
and last, Have FUN
geed luck