Many free tools can help, but each one works in a simple way. Google Keyword Planner gives ideas based on search data, while Ubersuggest shows keyword ideas and basic difficulty scores. Another simple option is using Google search suggestions, where you type a word and see what comes up. These suggestions come from real searches, so they are useful. It is good to combine two or three tools instead of depending on one. This way you see better ideas and patterns. Which free tool has given the most useful keyword ideas so far?