Welcome to MobileRead induna.
As youy can reference on the
MobileRead Wiki Format page, the Reader will directly support RTF and TXT in addition to LRF (non DRMed BBeB) and specialized format PDF files.
There are a number of conversion tools available on the
MobileRead Wiki Conversion page that will assist you in converting other formats to the Reader. Two of the most popular tools for creating LRF files are BookDesigner and html2lrf. PDF is a unique case as many of the PDF files are not text based but rather graphics inside a PDF shell. These are very hard to convert and must be either OCRed or split and enhanced through such products as PDFrasterFarian. Since the Reader has a 6" screen and most PDF files are designed for either an A4 or letter size output they are too small on the Sony to be read and the zoom feature does not work with PDF.
Many people have reported good results using clit to free LIT files and then to convert them to LRF for the Reader.
I hope this helps.