Yes you can run it. It can be downloaded from the App Store
Yes it is. Thus the name iPod TOUCH
Speakers were introduced in the iPod Touch lineup with the 2nd generation iPod Touch. The 1st generation iPod Touch does not have an external speaker.
It is compatible with the IPod Touch 2nd Generation. It is not compatible with the IPod Touch 1st Generation.
The iPod touch 3g is the newest model! (=
Yes, the 1st generation iPod Touch does have Wi-Fi.
no
no there are not
no
after the 1st
The highest possible iOS firware for an iPod Touch 1st Generation is 3.1.3. So you unfortunately cannot get iOS 4.3 on your iPod Touch 1st Gen.
no the first is thicker and wider
iBooks if available on 2nd, 3rd and 4th generation iPod touch with the iOS 4.0 update or higher. Since 1st generation does not support iOS 4, iBooks is not supported for 1st generation iPod touch.