turn on suggestions
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
No. Wi-Fi is required, any tethered or bridged solution will not work.
Please read this article from the public knowledge base:
KB26774 Requirements to use BlackBerry App World on BlackBerry PlayBook tablet
The search box on top-right of this page is your true friend, and the public Knowledge Base too:
