*If you are holding a copy of this that does not align with the 12th Edition of Robert's Rules of Order, recycle it and get the current copy.*
Full disclosure, I am a lapsed former member of National Association of Parliamentarians, so there is bias. Nevertheless, Robert's is about being fair, so I will give it my best.
The full edition of Robert's seems to be inaccessible to most. It is, in fact, a slog to read, but it does help organizations solve their thorniest problems. Robert's in Brief, while not being a fun read, is a really solid handbook for anyone in a position of leadership. I gave copies of this to my great-niece and nephew for their Greek meetings.
I hate long, rambling meetings. I like meetings that start on time, go through process with care, give everyone a chance to have their say, but also do so in a way that doesn't let anyone steamroll or dominate. Robert's in Brief gives the nuts and bolts of how to do that. It explains when officers need to step back and recuse due to an unfair advantage, it explains how when a committee brings a matter of business to the group, a second to their motion isn't required, and it explains that minutes can be complete while still being succinct . It explains that the treasurer's report needn't be as long as an annual report from a corporation. It explains that you accept that report for *review,* not file for audit (unless you pay a CPA to do an actual audit).
It also gives you an overview of how to run a meeting electronically, which given the advent of Zoom during the pandemic, became a necessity.
Now, if your organization needs to rewrite their bylaws, you probably need the big bowser book for the details it provides that will keep you legal and out of the soup. And you need to list it, rather than in brief as your parliamentary authority due to its comprehensiveness. But for the day to day running of meetings and such, Robert's in Brief is perfect. Remember, this is a handbook, not a novel, and the fun quips you'd find in a "for dummies" book are absent, but it gets right to the point, and that's exactly what you want.