What you need to know at each stage varies. More complicated roles with many different relationships, or jobs within large organisations may require more structured inductions. It’s good to have a written plan to support your first few weeks. This should be provided by the organisation ideally before you start work, but usually on your first day.
Your induction could be delivered to you by your manager, colleagues in different parts of the organisation at a welcome day, or online, using an ‘onboarding’ game or app. It will depend on the size of the organisation and the number of people joining at one time