You have to download it from the app store
Yes. Every iPod touch has built in WiFi.
Only the iPod Touch Gen 4 comes with a camera
Yes, you can connect an iPod Touch to a computer. Every iPod Touch comes with a cable, and that cable plugs into the bottom of the iPod Touch and the USB 2.0 port in your computer.
No, updating the iPod Touch software does not clear it. Every bit of information stays on there.
no only ipod touch 2g and 3g have built in internal speakers
iPod TouchiPod touch is better than the Nano because it has every thing the Nano has and more. If you're thinking on buying a iPod buy an iPod Touch.
No, the history from your iPod Touch cannot and will not be linked to your PC. There is no such feature that allows every movement of the iPod to be tracked as such.
well in my own opinion it just fells beter and you can do a lot more things with touch screens. for instance i have a iPod touch 32gbs and you can tilt it to the right and a little monke in a ball rolls to the right or playing taptap with just the touch of the screen. also you seem to interact more with a toch screen then a normal item wether it be a computer video game or iPod.
You will lose every thing that is on it
Yes. The iPod touch is designed to work with almost every WiFi network.
Yes. Every iPod Touch and iPhone, can use apps.
Every iPod touch has a camera on it.