Can Keyword Research be done without a tool?

[bracknelson]

Yes, but it will be time-consuming and hard to make a list on your own. So if you wanna try just go to a search engine like Google, Bing, Yahoo, etc.

Write a random keyword and you show a similar keyword under it these are the example of a keyword that most people searched.

And you can even try for free tools in the market for keyword research.