UPDATE FROM 01-FEB-2018: I have added new enhanced scan of this Grantha (much better quality), you can find download links below and in the following post - http://vishnudut1926.blogspot.ru/2018/02/enhanced-scan-narada-pancharatram.html
DOWNLOAD (English-Sanskrit, ENHANCED SCAN from 01-FEB-2018):
English annotation by Vishnudut1926: I fell in love with this Agama, as Tantra it is very simple, but very impressive! The Bhakti and Sadhana Khandas are truly fascinating!
The parlance of "Shree Narada-PanchaRatra" is rather simple and the appeal is definitely to common Bhakti folk (apart from more intellectual and highbrow Orthodox "Shree PanchaRatra", for example, "Shree Lakshmi-Tantra").
Sometimes "Shree Narada-PanchaRatra" is confused with "Shree Narada-Purana", because from one point "Shree Narada-Purana" gets very Tantric twist and becomes fully fledged Vaishnava-Shakti-Tantra.
But please don't confuse. Let's compare in brief, please see the following graph (backup on box, dropbox, minus, skydrive):