Reposting it from TamilBrahmins.com.
How to do Navratri Pooja at Home in Tamil - http://www.tamilbrahmins.com/showthread.php?t=28262
Navratri Pooja Slokas and Procedure in Tamil - http://www.tamilbrahmins.com/showthread.php?t=28302
Why do we make Sundal during Navratri - http://www.tamilbrahmins.com/showthread.php?t=28118
விஜயதசமி கொண்டாடுவது ஏன் - http://www.tamilbrahmins.com/showthread.php?t=28618
The Significance and Legends Associated with Vijayadashami - http://www.tamilbrahmins.com/showthread.php?t=13650
Significance of Nine Days of Navratri- http://www.tamilbrahmins.com/showthread.php?t=13553
History of Navratri - http://www.tamilbrahmins.com/showthread.php?t=2847
26 Navratri Sundal Varieties to Surprise Your Family - https://www.awesomecuisine.com/foodguide/17463/26-navratri-sundal-varities.html
Recipes for Navratri - https://www.awesomecuisine.com/categories/festival/navratri