Getting my work Office 365 email on my own laptop at home

Easiest is the browser: sign in to Outlook on the web with your work email and password, nothing to install. If you want it in the Outlook app, add it as a new account with your work address. Just a heads up, a lot of companies block personal devices or make you enroll the laptop in their device management first. If you get a message about your organisation or a policy, that's your IT team's setting and only they can allow it.