Several questions on using Custom Press

1. On the admin menu for a custom post type (surfers) I am getting two Tag selections.

Surfer
Add new surfer
Tags
Tags

2. Is there better documentation for Custom Press. I have read what is available and watched the video. Sorry but not as thorough as what I need.
The settings for custom fields and taxonomies, are not well explained and it becomes a strictly trial and error process

3. How is a media focused field created that would allow, gallery, slider, video?

Thanks in advance.