To stop ratings being downloaded - see attachment
Then you can can enter a number 1-5 in the Rating field in metadata edit. Or in the list, make the Rating cell current for book in question, Press F2 and enter 1-5.
If you want half stars or some such then you'll have to create a custom column and use Custom Icons - I haven't done it so I'll leave that to someone else, I'm pretty sure others have done that sort of thing.
There's a Custom Icons tab in Preferences-Look & Feel
BR
|