Get thee to a nordic center
A nordic center is the best place to begin your introduction to nordic XC. You'll find expert help that is lacking at the big box sports outlet stores and you'll be able to demo a wide range of nordic skis, boots and poles.
I XC skate and classic and was introduced to XC skiing at a nordic center.
If you want to look online at the variety of gear you can choose from then I'd suggest the Fischer
site. Select the nordic race link and you'll be able to see the entire range of gear from race to beginner touring in skis, boots and poles.
Nordic centers usually have used gear for sale.
If you want to score some very good deals on new (not used) gear, the I would recommend Sierra Trading Post