someone talk me through doing keyword research ahrefs?

Keywords Explorer, type in a few seed terms, set the country. Then open the matching terms and questions reports - that's where your actual list comes from. Filter KD low and volume to something realistic for your site. For each keyword you like, scroll to the SERP overview at the bottom. If the pages ranking now have only a handful of referring domains, it's beatable. Second trick: drop a competitor's domain into Site Explorer and look at their organic keywords. You'll find terms you'd never have thought to seed.