Thanks all for the replies, But still confused.
Have downloaded a few books from Kobo which are good size print to read
Though not as cheap as I thought compared to Amazon lol
However some pdfs which I found elsewhere are a struggle as so very tiny print
(I have pretty good eyesight Just need glasses for reading)
Read the advice but not got a clue regarding Calibre either
Would like to rename some books and add covers
Do I use it as well as ADE or instead?
Have got my books on the pc all neat in one folder Dont want another program to mess them up.