Whether you're a novice knitter, or a Knitting Diva like moi, Argyle is an excellent LYS (local yarn shop) to patronize. The owners (Esther and David) are very helpful and sweet and the shop just oozes welcome.
They have a decent selection of yarns (Malabrigo, Madelinetosh, Shibui, and Rowan amongst others...). They wind your yarn for free when you buy it, and I have even seen Esther helping out someone with a pattern a few times! I've been there several times and they always remember me---very touching, since I live out-of-the-way and make it out there sporadically at best.
They have a room in the back where they host trunk shows and local knitting groups, as well as a table and chairs in the main part of the store. The space is well lighted and modern looking; yarns and accouterments are neat and tastefully displayed.
The only minus I can think of is their distance from me :/
They're located at 288 Prospect Park West, Brooklyn, NY 11215. They are open Tuesday-Sunday 12-7.
This is what I got from them last time:
I got some Knitter's Pride Nova Needles (40" size 0 and 1.5), a Lilly Brush (http://lillybrush.com/) which is like the bestest thing EVAR if you're a Malabrigo fan... Esther brushed the pilling off my Fetching mitt made with Mal Rios and I was SOLD!, A skein each of Schaefer Yarns Anne in the Tatiana Proskouriakoff colorway (which btw, SY is liquidating and stopped making yarns :/), Malabrigo Sock in Impressionist Sky, and Madelinetosh Tosh Merino Light in Baltic. They even threw in some sample packs of Soak for free :DDD
I am not a frequent customer of NYC LYS, as I do prefer to buy stuff online due to laziness and being a bit frugal, but this shop is worth supporting and taking two buses to get to :P