Glossary

http://www.cintamani.org/bhakti-glossary/

Devotional Service Surpasses All Liberation / Book

http://vedabase.net/nod/
http://www.krishnamedia.org/e-books/Nectar_of_Devotion.pdf

Articles Collection

http://www.bhaktiyoga.net/articles/index.html
http://krishna.org/category/devotees/
http://www.geocities.com/suci123/index_files/page0005.htm

Bhakti Yoga

http://en.wikipedia.org/wiki/Bhakti_Yoga
http://www.asitis.com/12/index.html