Things You'll Need
Instructions
Download a DS PDF reading application. You can try DS Libris or DS Reader. Both are available for free.
Slide your SD card into the SD card reader attached to your computer.
Extract the DS reader you downloaded to your SD card by right-clicking on the file's name, selecting "Extract," then choosing your SD card as the location.
Copy the PDF file you want to use on your DS. To do this, right-click on the PDF file and select "Copy." Open your SD card, right-click, and select "Paste."
Remove your SD card and slide it into your Nintendo DS.
Turn on your Nintendo DS and select the DS reader application that you downloaded.
Choose the PDF file you want to read, then press "A" to read it.