As you are asking about where to find your downloaded ebooks and sample papers on your device, WELL then if you are using a mobile device which is Android then you need to check out your device default download folder where the file will be downloaded and saved and then you can use a PDF viewer app to open the file , you can also locate the file using the File Manager app and if it is an iPhone Then you can press the download I can which is located next to the URL bar and when the file appears you can save it to your files .now if you are downloading the file in the application of careers360 then you must look for the E library section after which you will see all books tab and then in the right of the all books tab you can see my reads , that is where you will see your downloaded material click on read now to read any material