METHOD STEP BY STEP
1) Go to Google and type in your main keyword.
2) Press on your keyword and a new window should open with google and your keyword typed in it. Put your keywords in quotes and press enter, you should now see a figure, this number is showing you how many people are you competitors.
3/4) Put &start=990 to see how many pages google is showing with your keyword.
5) Insert intitle:"keyword" and press search to see how many of the competition have done on page SEO and have the keyword in the title on their page. (part of on page SEO).
7) Insert inurl:"keyword" inurl"keyword" and press search and you will see how many people have done proper SEO and are REAL competitors for your keyword.