Wordpress theme for niche directory

I am working on website which will be a online directory for a niche in the city.

have purchased a wordpress theme for same. Now the challenge i am facing is how to capture thousands of local businesses related to that niche from the city.

is there is anyway where in i can extract information from a particular web page or website to the excel like name, contact details email and urls.

is there is a faster way to filling real data into web directory than manual filling each and every field ?

your replies on this are much appreciated