Suppose you want to study additional texts from within the FullChinese App. In this case, you can simply download texts on specific lessons or topics from the FullChinese Store. They are split into three categories: HSK Books, FullChinese Text Books, and FullChinese Topics which cover a broad range of practical topics. Once you've downloaded the text, you can access it from your Device or the Cloud.
To download a new text:
Go to "Store"
Tap on your desired book (e.g., FullChinese Topics under FullChinese Topics)
Tap the "Get" button
Download the desired lesson (e.g., house compact)
Now, you can access the book from your "Texts" tab underneath the "Books" section.