Free Keyword Research
When I clicked on "KC" I was directed to keyword finder, here there are a limited amount of free searches available as well as pricing plans. With kw finder "Search" gives you average monthly search volume, "CPC" is average cost per click, "PPC" is level of competition in PPC advertising, "DIFF" is keyword seo difficulty. You also get a list of keyword suggestions. Don't worry if you run into any difficulties there is someone there to chat with and give you a hand.
Good luck with your keyword research and may your journey lead you to "#1".