What Ed and Neil said.
Of course, you will get some individualized instruction at the outset. But in kendo, and probably iaido, too (I come from a very small iaido club so am not sure what's standard), you're shown something, and then it's work, work, work on it for a looong time, usually with the rest of the club. It's really humbling, but you have to knuckle down and immerse yourself in it if you really want to do it.
There are some EXCELLENT dojos in NYC. I know of the following, and can recommend them all because I have practiced with their club members and sensei at Midwest gatherings:
Ken Zen Institute
54 Thomas St.
New York, NY
Kendo Tu Th 7:00-9:00pm Sa 6:30-9:00pm Su 12:00-2:00pm
Iaido M 6:00-8:00pm W 6:00-8:00pm Sa 4:00-6:00pm
Contact: Daniel Ebihara (212)406-9104
New York City Kendo Club
Jan Hus Church 212-874-6161
351 E. 74th St.
New York, NY
Tu Th 6:30PM, Sa 2:30PM
Contact: Noboru Kataoka (212)877-8722
Shidogakuin NY Doshikan
225 East 43rd Street (btwn 2-3 Aves)
2nd Floor
New York, NY
Su 3:00-4:30pm Iaido 4:30-6:00pm Kendo-beginners & youth 6:00-7:00pm Kendo keiko
Tu 6:00-7:30pm Kendo-beginners & youth 7:30-9:30pm Kendo-adv. & keiko
Th 6:00-7:30pm Kendo-beginners & youth 7:30-9:30pm Kendo-adv. & keiko
Contact: Shozo Kato (203)637-5475
BTW, I have some video of me doing kendo, but no net space to host it. Yet!
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