| 1.PC (personal computer) |
Please choose［PDF］to download and save it, then open it with [Adobe Acrobat] and use［Page Thumbnails］as a contents search. |  Adobe Acrobat |
| 2.Mobile device of Android |
(1) Prioritize［PDF］to download and save it, then open it with［Adobe Acrobat］and use［Page Thumbnails］as a contents search. (2) Please search for the applicable App if choose［ePub］. |
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| 3.iPhone, iPad | (1) Prioritize［ePub］and then open it with［iBook］；
(2) Save the file to［iCloud］first and then can be used；  ［How to use］：ePub for iPhone, iPad
(3) Save to［Google drive］if space of［iCloud］is full ； (4) Please use instead［Adobe Acrobat］ because ［iBook］is not available to use. ［How to use］：PDF for iPhone, iPad
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 iBook(only iOS) |