UPDATED: 12 Oct 2020
Here's my mindmap on the very helpful book "How To Make Meetings Work!" by David Straus and Michael Doyle. Click the image to open a mind map hosted on the XMind website. Or save the image as a file on your local disk.
Steps to a better meeting
Also copying an appendix from the book, slightly updated for the online reality.
Before the Meeting
1 - Plan the meeting carefully: who, what, when, where, why, how many.
2 - Prepare and send out an agenda in advance.
3 - Come early.
At the Beginning of the Meeting
4 - Start on time.
5 - Get participants to introduce themselves and state their expectations for the meeting.
6 - Clearly define roles.
7 - Review, revise, and order the agenda.
8 - Set clear time limits.
9 - Review action items from the previous meeting.
During the Meeting
10 - Focus on the same problem in the same way at the same time.
At the End of the Meeting
11 - Establish action items: who, what, when.
12 - Review the group memory.
13 - Set the date place of the next meeting and develop a preliminary agenda
14 - Evaluate the meeting.
15 - Close the meeting crisply and positively.
16 - Clean up and rearrange the room.
After the Meeting
17 - Prepare the group memory.
18 - Follow-up on action items and begin to plan the next meeting.