Glossary
What is a NOTAM?
A short published notice about something temporary a pilot needs to know: a closed runway, an unlit tower, a navigation aid out of service, an airspace restriction. Reviewing the ones relevant to a route is part of preflight planning.
Also called Notice to Air Missions
That is the whole entry for now. The longer version, with the mechanics and worked examples, is still to be written. See autorotation for how those read once they exist.