How does a potential employer hire me?

Hey guys. New to the group, spent a while reading through to see if I could find an answer to my question but I couldn't, so I thought I'd ask anyway. My (I'm from the UK) IEC visa has all been accepted, and I am good to go when I am ready. I have been speaking with a potential employer. They're a small company in NS, and they are curious what they would need to do to be able to hire me. I know that's quite a broad question, and I'm happy to answer any specific questions at all to make it easier. Thanks!