problem with the SD memory card

Hello everyone,

are there any tutorials that could teach people to write the code with the SD memory card? except this link :http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1206874649

because this link i don't know what script in the code is important, and which can be cancel in my project

Thanks everyone, my project is finding speed that came from a speed sensor, and then save it to the memory card, Thanks everyone