You can follow the below instructions to read or import your eBooks from other apps (here using Dropbox app as an example):
(1) open Dropbox app on your phone or tablet, locate the eBook file that you want to read or import, the format of the file can be either PDF or EPUB;
(2) select an eBook file and you will see the “Complete action using” pop-up window. If you want to read the book immediately, you can select “Read with Aldiko”. If you would like to import the file into your library in the Aldiko Book Reader and read it later, select “Import to Aldiko”. We recommend you to select “Import to Aldiko” option because when your book is imported into Aldiko, Aldiko will remember your reading position, bookmark etc. “Read with Aldiko” option will not do this. Below we select “Import to Aldiko”;
(3) after selecting “Import to Aldiko”, the book will be automatically imported. You will see a “New Content” window and your book at the end. Now you can quit the Aldiko Book Reader. Next time when you come back, you will see your new book right in your library, just go ahead to enjoy reading! If you would like to read or import files from a website or Gmail client (PDF files), the procedures are the same as above.