Your iTunes balance is saved server side. Long story short, as long as you log in with the same account on the other computer's itunes client, then yes.
To use multiple iPods on the same computer you can either: Set up separate user accounts which will keep all your music separated Sync each iPod to separate playlists in iTunes Have separate libraries for each iPod. (See links below)
If you open the Purple iTunes Application(App) then you can purchase music, videos, books, and more; all from that app! You can do the same in the itunes store on your computer(IF you have iTunes on your computer).
You can keep separate libraries for different music within a single copy of the iTunes software. Hold down the option (alt) key when you launch iTunes and you will have the option to create a new library.
YouTube is a web based video site but iTunes is a computer based music storage and play program you can install on your computer. The only changes to the security settings you will need to do for iTunes are the same for any program you want to add to your computer.
If you mean the same iTunes account, then yes. My sister has the same account on iTunes on our home computer as well as her laptop. But if you buy some songs from the iTunes store from one of the computers and you want the new ones on your other computers, you'll have to sync those songs into the other computers' iTunes.
Usually when you connect your ipod to your computer it will sync with iTunes installed on your computer and it'd do the same for your new iPod.
Just sign into your iTunes store, or app store on your Mac with the same Apple ID you have on your HP.
Yes, if you redeem an iTunes card on your computer, the credit will be added to your Apple ID account, which is linked to your iPod. As long as both devices are using the same Apple ID, the credit will be available for purchases on iTunes on your iPod as well. Just ensure that your iPod is connected to the internet and signed in to the same account to access the updated balance.
It means you have un-ticked the box open iTunes when iPod/(any I device) is connected to computer. All you have to do is find iTunes and open it by yourself and then if you have MAC go to preferences and tick the box 'open iTunes when I device is connected'. Or if you have a PC access iTunes's settings and do the same.
Yes, its possible. You are allowed to acces your iTunes account from a maximum of 5 computers. As long as you have not already done so you can sign into iTunes in your own name and then your 'purchased' file will automatically show up on the computer you are on. Sometimes, if the computer you are doing this on already has a purchased file, the songs will go into the pre-existing purchased file. All you have to do is put the songs onto your mp3 player directly. Note that you cannot send these songs to yourself unless you are signed into iTunes in the same account.
As long as your computer has itunes that is authorised on the same itunes account as your iphone, then it will automatically transfer all your iphone apps onto the computer