Does anyone know how I can control lots of pins, at least 200
This might work 
Wow my first post on the forums I get ignorance and wannabe trollers.
Whoui:
Wow my first post on the forums I get ignorance and wannabe trollers.
Sorry for trying to inject a little humour.
Almost 5k posts hardly makes me a troller.....
But you gave no indication of what it means to control a pin.
Haha ok like an arduino pin on the microcontroller
integrated circuits(Shift registers) give you controll of multiple pins if you are new to arduino I would suggest picking up Seed Studio ARDX starter kit level 1 for arduino.... I still use mine all the time, but it comes with a lesson on controlling 8 led's with 1 output wire I believe
go to this link anc scroll down to CIRC-05 for a brief explination and what you need to do the project.
Thank you! I am really new and only 12, this really helps
However you should really check out the new smart led strips, I havent purchased one yet but they have chips that allow controll of the individual LED's in the strips with only 3 wires needed per strip. Radioshack sells them in three meter strips that you can cut into sections that are multiples of three.
Ok I'll check them out online no radio shack where I live in Australia.
I can't seem to find them on radioshack.
something like this.... but first learn the code and how to mess with single led's, learn the shift registers, and other stuff, and things will come easy after that. Good luck.