6) I want to start a poll or guest book but can't find it.
Polls and guest books are only available if you select customize channel. There you can add the poll or guest book panel.
7) Where is the channel search?
The channel search is on top of each channel, indicated by the magnifying glass. Additionally, you can use the search panel, more prominently display it.
Can I change the video and post tabs too?
No, currently, you can only customize the home tab. For viewers and visitors, it gives the advantage always to find your videos, regardless of how you choose to design your channel.
How many panels can I add?
You can choose from 17 different panel types and add up to 20 to your home page.