Here is a simple tutorial explaining how to stream your iTunes library to your iPad.
1. Enable Home Sharing on your iTunes on your Mac or PC. Launch iTunes and Click on Advanced tab, click on Turn On Home Sharing
2. You will be presented with this screen within your iTunes, enter your Apple ID and password, then click the Create Home Share to finish.
3. Go to your iPad and select Settings > iPod > Home Sharing – Enter your Apple ID and password then tap on Done.
4. Launch iPod and tap on the Library and your iTunes Library should now be visible underneath.
That’s it, I hope you found this useful.