Thank you guys, I think I understand a bit better what I can do with Calibre and what I can't do.
For instance, I won't be able to have inside Calibre Library the same architecture as on my hard drive folder:
- Litterature
- French
- Dumas, Alexandre
- Hugo, Victor
- Hugo, Victor - Notre Dame.epub
- Hugo, Victor - Les Misérables
- American
- English
- German
- Philosophy
- aesthetics
- moral
- politics
- epistemology
- Science Fiction
- Poetry
- Science
Because Calibre Only takes meta data to organize books inside the Library.
Is there a way to import my hierarchy "by subjects" inside Calibre Library?
Maybe there is an easy way to find all the "litterature / french" ebooks and tag them inside Calibre after import ?
Thank you again for your explanations
François