There are many ways to create entries in Day One. The screen shots are mostly from iPhone, but they apply to the iPad as well.
- Tap the + icon at the bottom of the screen to start a new entry. Media icons are displayed when the entry is first opened. Tap these to add media or start typing and they will hide. Media can be added later in a blank entry. See here.

- Long press the + button to access additional options

- When you are in Calendar view, tap a date to open the Today view for a variety of options to create new entries. Today replaces the Activity Feed view. Long press a date in the Calendar for a menu.

- Long press a location in the Map view to create a new entry at a specific location
