Is door knocking worth it, how to buy name and numbers to call?

[Mercedez H.]

Hello,

Ive had my RE license for a year and haven’t used it yet but will be working with Keller Williams as they offer great classes and marketing strategies. I want to work with them for a year then get my brokers license so I can keep all the money I make. I was wondering, does door knocking really work and is there some type of company that sales names and numbers of home owners for me to cold call? Thanks in advance