"Operations manuals" sound like a scary bureaucratic thing that only big companies have, but personally I think everybody needs them.  It doesn't have to be big and formal, it could simply be a wiki on the internal web site, but somewhere all important steps and procedures should be documented.  Even if no one gets hit by a bus, having a check list on how important things work is always handy to refresh your memory, especially if it's something you only do a couple of times a year.<p>Also if you hire a new person, being able to point them to a place which explains exactly how your company does version control or how your build process works will save everyone a lot of time.