yes the ipod touch 2g does come with the apps store as well as iTunes store
any apps for ipod touch 1g, 2g , and 3g will work and new ones
all your current apps will stay the same after jailbreaking.
No, not without jailbreaking your iPod 2g.
Yes you can. Make a back up of the files through iTunes and then on the other ipod perform a restore from backup
Pretty much all jailbreaking your iPod touch does is give you the installer app... Which I highly recamend you do but make sure you do the write jailbreak program or it will delete all your apps music and videos and pictures
they do for you
no...
2G
Any iPod Touch 2G case WILL fit the 3G. I've purchased two myself.
no
No, an iphone is a cell phone that has speakers and you can text on and make phone calls. An ipod touch is an ipod. It is meant for listening to music but, most people who own an ipod touch mostly play games on it. But, an ipod touch you can download apps that you can text people on but the 2g ipod touch it doesn't have speakers. So, if you have an ipod touch you can't download an app that makes free calls because ipod touchs don't have speakers. But, iphone can do alot more than ipod touchs.