Update README.md

Author: mirianbr

README.md

@@ -1,2 +1,32 @@
-# books
-Private book library data load and exploration.
+# Books data load and exploration
+
+This is a private book library data load and exploration.
+
+Since our private library was first assembled (my husband's and mine), some years ago, we have been keeping track of our books in text files, using a proprietary format based in key-value to make the data easy to be read. Something like this:
+
+```
+type=book
+subtype=nonfiction
+subtype=fiction
+
+title=There Are No Electrons
+subtitle=Electronics for Earthlings
+author=Kenn Amdahl
+alt_author=Kenneth Amdahl
+publisher=Clearwater Publishing
+year=1998
+year_first_publication=1991
+num_pages=322
+
+isbn=0-9627815-9-2
+lang=en_US
+
+keyword=Electronics
+keyword=Jargon
+keyword=Static Electricity
+...
+```
+
+Each book has its own file, stored in folders from A-Z according to the main author's last name. With time, new books arrived, and their data was added to this text files collection as well. It's a large collection we're very proud of, but not even close as large as [Umberto Eco's home library](https://www.openculture.com/2017/03/watch-umberto-eco-walk-through-his-immense-private-library.html) (well, not yet).
+
+Now it's the first time I'm actually reading the book files, to extract stats and indulge ourselves by looking at our beautiful library from a different angle. 📚❤️