I do not know which Microsoft 365 app to use for the job in front of me

I started the day in Outlook and Teams, which felt normal enough. I answered a few messages, opened a file someone sent as an attachment, and joined a Teams meeting where two follow-up actions were mentioned. That was the small win: the information was captured somewhere, and nobody was completely stuck.

By mid-morning, the uncertainty started. The updated file could go back as an attachment, into OneDrive, into the Teams Files tab, or maybe into SharePoint. The meeting actions could be private reminders in To Do, shared cards in Planner, a Loop list, or just notes in the meeting chat. I knew Microsoft 365 probably had the right place for each thing, but I did not know the rule.

After lunch, I searched for a document that might have been in a chat, a channel, a SharePoint folder, or my downloads. A repeated request raised another choice: should it be Forms, Lists, Excel, Planner, an approval, a Power Automate flow, or just a clearer manual checklist? Then someone asked whether Copilot could summarise the meeting, and I was not sure whether that was useful, allowed, or risky.

By the end of the day, I did not want a deep technical course. I wanted a plain-English map: what each Microsoft 365 app is for, when to use it, when not to use it, when AI or automation helps, and how to make the same choice next time without asking around.