Study the full unit and do all the exercises.
You can open the Ebook in a new tab for a better preview - Unit 1 - Basic pronouns and conversation
The Ebooks are not fillable, instead, you can use the Assignment file to do all the writing tasks.
There are 2 options:
The unit: Assignment file - TB Unit 1
Listening to the audio is the most important thing in order to pronounce the language correctly.
Listen to the recordings in any chance you have - recordings