Currently looking on a 960 or a 780ti graphics card at Newegg. and bought some items like a cheap USB miner for bitcoins which I use for my hobbies, mostly.
I gave my first try buying with btc on newegg too a few days ago.
Is Newegg the first online store accepting bitcoin?
Hmm no. Over here there were other shops like Tigerdirect.
Globally i think Overstock.com was accepting Bitcoin long before. I'm not sure which shop it was truly the first, but there are a lot of them now.