It depends on the app. Some apps have free updates. Some apps require you to pay for the upgrade. It all depends on the license terms.
Yes. It's also free to update payed apps, that you already bought.
Updates offered through the App Store on the Update screen are always free. There may be upgrades and additional features in apps available for an extra charge. This will always be clearly spelled out to you as an in-app purchase.
Yes I believe they are free
iPad apps are the exactly the same as iPhone and iPod touchs. Most are free but others are up to 10$
yes there are certain free and paid apps for instruments on the ipad
Mainly from the App Store pre-installed on your iPad!
Only Apple Apps such as 'iMovie' will really be 'iPad 2' Only Apps. All iPad 1 Apps will work on the iPad 2.
Try looking in the App Store. Look in the front page and look up Top Free Apps.
No, you just need to free download iTunes and then use it to buy apps. iTunes is free.
Each application installed can have a downloadable update, so it will depend upon the apps installed on the iPad. There have been 3 major operating system updates for the iPad 2 since it was first shipped, and each of the core apps is updated with that.
There is no site that will offer free music to store in the iTunes app for the iPad. You can stream free music online at Grooveshark, or use the YouTube or Rhapsody apps.
Anywhere from free to thousands of pounds/dollars. Most of the popular apps are either free or about 59p. However, you can get almost every app for free if you jailbreak.