To open a downloaded book you should follow these steps:-

• you need to download the career360 app here i am providing you the link below to download this app.
• then login to the app with your mobile or email.
• then go to " e-library " section there you will find "all books" tab.
• then in "all books" tab you need to open "My Reads" tab you will find your downloaded book there.
• then click read now to read any book or other pdf.

app download link:- https://play.google.com/store/apps/details?id=org.careers.mobile&hl=en_IN&pli=1