hello, how do i use the ebook?

i installed ebook program on my 6600 but i dont know what file i have to download to be able to open it in ebook.

Why not try Memoware (http://www.memoware.com). They have thousands on Books availble for download, in various format including ones that will work on Symbian (epoc) devices.

what ebook program do u use?

mine can't read files in adobe acrobat.

what file should i download to be able to view it in ebook reader?

.pdf? ?

and what program should i install to be able to read text document?