Identify key words, key competitive keywords. Therefore, if your main keyword is too competitive, then after defining the main keyword, your next step is to identify the secondary keyword.
How to Do Keyword Research for SEO:
Step 1: Make a list of important, relevant topics based on what you know about your business.
Step 2: Fill in those topic buckets with keywords.
Step 3: Research related search terms.
Step 4: Check for a mix of head terms and long-tail keywords in each bucket.
Step 5: See how competitors are ranking for these keywords.
Step 6: Use the Google AdWords Keyword Planner (or HubSpot's Keywords App) to cut down your keyword list.
For keyword research, use SEO tool named Google Keyword Planner. Type the theme of your website and then find the relevant and catchy keywords for your website.