Dear netizens, hello everyone! Steps of downloading materials from the tutor: log in to BBK official website on the computer-download-download materials-select the tutor, find your machine model, enter the 13 barcode on the back cover of your child's textbook in the barcode retrieval box, and find out the materials consistent with the publication year, month and version of the textbook from the retrieved information. Printing time is universal. If there is no bar code, you can search by grade, subject and publishing house, and then click Download-Save on Computer Desktop-Connect the tutor with data cable. After the download is completed, right-click the data to be sent or copied-tutor root directory-disconnect USB connection-turn on the computer and select the corresponding module, subject and book.