Archery Product

I’m buying this archery longbow, and I have a question?
http://www.3riversarchery.com/Product.asp?c=44&s=156&p=199&i=20931X
I’ve been shooting for quite some time with an old longbow, and I want to try some new bows and get more into archery, since I find it actually really fun. On that particular bow, it says pull #: 45, 50, 55. What is pull #…?
and should there be anything else important to know about archery, as i’m just beginning (i’ve already watched tutorials on tips on shooting/aiming, and I don’t want a combo bow or a scope, but i can already shoot pretty good)?
um, also, when it asks for right or left hand, I chose left, as that’s the hand i hold the bow in. that’s what they’re asking, right? thanks in advance for any help
I used to do archery at the Kansas City Renaissance Faire. The # for pull, #30, #45, etc., is the pound strength (forgot the actual term). So #45 or 45# is a pull of 45 pounds. As for the handedness, left handed people hold it in their right hand and right handed people hold it in their left hand. Hope this helps.
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