To load your documents, simply open your Speechify app and tap on the My Files. You'll find all your documents and folders on this view. You can also use the 'search field' to search for your file.

From this view, tap the ... kebab icon on the upper right corner of the screen and you can see multiple options -- you can also create a new folder to organize your documents. Select Files to 'Move to Folder' or Delete'. There's also an option to arrange/organize your files according to Recently added, Recently played, and Alphabetical order.