Originally Posted by sjgadsby

For the documentation:

1. Launch the File Manager on your tablet.
2. In the File Manager, tap the "Documents" folder.
3. Tap the "User guides" folder.
4. For each user guide you don't want:
   1. Tap and hold on the file name.
   2. In the context menu that appears, tap "Edit".
   3. In the sub-menu that opens, tap "Delete".

The sample media files on your tablet are in the folders "Audio clips" and "Video clips". You can delete those media files using the same techniques you just used to rid your tablet of excess documentation.