As we said, an SEO checklist goes way beyond keyword monitoring. However, it's always a good idea to focus on 'monetizable' keywords and investigate search intents and the most commonly used keywords within search queries. You should also try to work with a keyword map and track long-tail keyword variations. Dedicated instruments such as Google Keyword Planner or SEMrush Keyword Magic Tool can help you out with these. Also, don't forget to conduct a competitor analysis.