For searching an easy to rank keyword, you’ll need a keyword tool. There are many keyword tools out there sure, the free keyword tools don’t give you that detailed information like the paid ones, but to start of they’ll do it too. A free keyword tool would be Google Keyword Planner. I personally use Jaaxy and it only costs $19 a month. Anyways, start off with a keyword like „best projectors“ and dig down to long tail keywords like „best home theater projector reviews“. Search about five of this keywords with low competition. In Jaaxy there is an index called QSR that displays the number of competing websites that rank for that keyword (I usually pick one with QSR under 30). Once you found five low competition long tail keywords go to the next step.