What recommendations for on-boarding Sages would you want included in a Sage-page?

For instance, I didn't know I could only accept one answer when there were two, equally good and complete.  I would've at least tossed a die, but didn't know it was "Pick only one".  What have you run into that would be helpful to know about Sage as a Sage?...

What are some reasonable steps that could be taken to fireproof historic French cathedrals?

Like Notre Dame...