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The Learning to play Minecraft Education article has information to help you learn how to play. You are signed into Minecraft Education and can begin playing.
This article provides information on how to use the free trial and the demo lesson. The demo lesson does not require any account or log-in. The free trial requires you to have a Entra ID account, either an Office 365 Education account or a Microsoft 365 account (Note: Personal versions of Office 365 or Microsoft 365 do not provide access nor trial access to Minecraft Education). Minecraft Education is available to anyone to try for free! There are two ways to try Minecraft Education for free, through the free trial or through the demo lesson.