For my internship organisation Legacy, the Historical and Environmental Interest group of Nigeria, I organised a webinar on the Afro-Brazilian heritage in Nigeria. In doing so, I learnt a lot of practical skills. I put what I learnt in writing for my organisation in a step-by-step guide, so the next organiser of an online event does not have to re-invent the wheel. I am also putting it online here, so maybe others can also gain from what for me was a crash course webinar organisation.