Help A noob

So I just learned that Arduino exists today and wanted to start a simple project that starts at 40 and counts down to 0 every time a button is pushed and changes a 2 digit counter can you help me know what materials I need and how to start programing it thanks.

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this will help you with the count down: http://arduino.cc/en/Tutorial/ButtonStateChange

with two digits that will be ~14 digital pins, so you will need(most likely) to multiplex or similar:
http://bildr.org/2011/02/74hc595/
http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1291664494/all
search google: "2 digit 7 segment arduino"

READ the forum a ton! look at the tutorials here:
http://www.ladyada.net/learn/arduino/
http://arduino.cc/hu/Tutorial/HomePage

I would suggest doing the same on the Serial Monitor screen on the Arduino IDE that lets you get information printed that what is working inside the Arduino programme ,see >>arduino.cc/en/Reference/serial with this you only need a Switch and a 10k resistor to connect the switch(push button) with some wires and you have the working thing ready ,now you just need to get further with displaying that info. on a 2 digit 7 seg. display.

with this you only need a Switch and a 10k resistor to connect the switch

Or you can think a little, skip the 10k resistor, and use the free one supplied with the processor.

what he is saying is you can use the internal Arduino pullup resistors instead of providing a resistor.

pinMode(ButtonPin,INPUT); //set pin as input to detect button
digitalWrite(ButtonPin, HIGH); //set the internal resistor