Hi, im sort of new to kindle, can they read Epub or PDF format
Supported files for Kindle books are:
KF8 Kindle Format 8
AZW (This is essentially a copy protected version of .mobi)
MOBI
PDF
If you want to read epub files you need to convert them to one of the above formats with a program like Calibre
I use sumatraPDF to read all of the above files... it's lightweight software... try it...