Hey Max --

I haven't gotten an iPad either, but I do use iBooks on the iPhone 3GS. I've been using Calibre to convert e-texts into ePub format to get into iBooks (Stanza also works, but I like the iBooks interface better). It's been a while since I looked around for Chinese content, but there is certainly no shortage of Chinese websites offering books for download in ePub format, and I believe Stanza also provides feeds of some Chinese-language news sources.

It also might be worth creating an account in the Chinese iTunes App Store, as there are some applications that are available only there. That said, I don't know how many iPad-specific apps there are yet: my guess is that the overwhelming majority of them would just be up-scaled iPhone apps.