Neat! I sympathize, trying to read books in Russian. Tracking progress with individual words reminds me of some of Michael Walmsley's work at the University of

Neat! I sympathize, trying to read books in Russian. Tracking progress with individual words reminds me of some of Michael Walmsley's work at the University of Waikato: http://www.cs.waikato.ac.nz/genquery.php?linklevel=4&linklist=CS&linkname=PhD_Theses-0&linktype=report&listby=Researcher&lwhere=unique_record_id=156&children=Research http://www.cs.waikato.ac.nz/genquery.php?linklevel=4&lin... His software actually picks things for you to read based on words that it knows you still need to learn.