You should buy the apps. Getting the paid apps for free is illegal.
Reinstall them or check if they are compatible with your firmware.
Any generation of the iPod touch can upgrade to the latest firmware (the first generation iPod touch cannot be upgraded to the latest firmware, but it can be upgraded to 3.0 which does support apps) The first generation that supported apps without an upgrade was the second generation.
Could be an error in the firmware. Try re-installing a firmware.
to download and use apps from apple you have to upgrade your firmware to 2.0 or later
you should, well i would prefer you to get a 8gb ipod touch because the 32gb would not be able to get that many apps.
Some game apps require a recent firmware version to run. Update your iPod to the most recent firmware using iTunes and try running your apps again. In order to get internet on your iPod Touch you must be in range and connect to a wireless router.
The iPod Touch firmware 4.0 that coincides with the release of the iPhone 4 has a few very good advantages, which include App Multitasking. The firmware is supposed to make apps run smoother, too.
Depends on what firmware. But Applications that supply free movies are MovieBox and PlayBox
You decide.
If you can't access apps on the iPod Touch, then you should try updating the software version of your iPod Touch to the latest version.
No. If you are concerned about jailbreaking, you can always restore the firmware (this will erase all jailbroken apps, but you will still have your iPod). The only real risk is if you were messing around manually in the filesystem, and even then you should be able to reach DFU mode (Google it)
no because you need a laptop or a computer to download the apps