Beginner's use of Nokia 5200

Abstract: Just bought the 5200, 680, originally came with one original battery and a pair of headphones. Spent another 180 to buy an additional original battery, 30 yuan for a Nokia data cable (later found out it was overpriced, as an MP3 cable would have worked fine), and a 1G Kingston SD card for 50 yuan. I had a card reader before, but now I've realized that using a card reader with the 5200 is quite inconvenient because the card is inside the back cover, requiring me to dismantle it every time, which after a few times makes the back cover loose with large gaps. It's much better to directly connect via the data cable, selecting the data transfer mode, making copying very...