Would I deal with a 'noob'? Likely not.
Would I deal with a 'newb'? If we did things by the book, sure, I'd take a shot.
Noob means you have little or no knowledge (and usually, little or no hope for obtaining knowledge) in regards to a particular subject, etc. Newb simply means you're new. Everyone was a newb once. Not everyone was a noob though. Thus, if you're actually active in the community, and employ certain safe guards when dealing with people (shipping only to verified Paypal Addressed with signature required via USPS or another major carrier with decent tracking), and are willing to provide certain information (perhaps, phone number, email address, etc) then I dont see people having that much of a hard time dealing with you.
If you have other sales experiences (eBay trading history, Heatware trader rating, Fred Miranda feedback, etc) then it's definitely a plus if you're less than inclined to give out certain information. If you're willing to be open with people about certain things and treat them the way you'd want to be treated as a buyer though, you shouldn't have any problems once you become eligible to post your own for sale posts.
Welcome and good luck!