Thread: Will the R4Ds cards allow me to read ebooks?

Sorry, I'm completely new to this. Basically, all I want to be able to do is download my lecture notes onto my DS. Will a card
allow me to do this and if so, what programmes will run them? Also, will it run pdf. files or will I need to convert them?
I've tried looking at verious sites but ended up getting completely confused. Sorry if this Q has been answered a million times.

I saw a app called ANS for reading PDF files on the DS. I don't know what else is necessary if I buy this device with micro SD cards