Hi , I hate the hard copy versions of the Books.
Those books are really weight than me . I get hard time
in carrying them.

what I need is CHM or PDF or djvu , html or txt ebooks.

where I can transaction (pay money and download ) those books ?

what is the legal ebook selling site for the best money ?
I am a student and prefer to have discounts if there are any.:)

I have a legal paid library card to enter to a physical library.But I
hate to go to the physical library and needs everything inside
my laptop computer.Is anyone knows internet library that we
can read books by paying .what is the best book internet library
for lower est price ?

--Thanks in advance --