Categories

Hi Anubha, I am not very sure of your question. Are you talking about IndiVine on IndiBlogger or of Blogger (blogspot.com)

blogspot.....i have sen so many bloggers having placed their posts under categories for ex Travel, food, blah blah...

Its been years since I blogged on blog spot. hence wont have exact idea. will tell you in some time.

I think it would be the Labels. Try assigning your existing posts as labels. I hope others who are on Blogger can come and help you with adding that into your blog template as categories.