You can do proper keyword research without buying SEO tools by using free resources and strategies. Start by using Google's search bar for autocomplete suggestions. This will give you a list of popular keywords related to your topic. You can also explore Google Trends to identify search interest over time. Another option is to check out related searches at the bottom of Google's search results page. Free tools like Ubersuggest or Answer the Public can also provide keyword ideas. You can use forums or social media to see what questions people are asking about your topic. This will help you find relevant keywords without spending money.