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Two continuing education programs are available from Chicago Metallic: "Designing with Metal Ceilings" and "Seismic Requirements for Suspended Ceiling Systems."
A relatively inexpensive hobby of mine is the collecting of old technology books. My collection includes books on rebuilding player pianos, blacksmithing and a mail order course on how to set up a vacuum tube radio repair shop (I will be set if my time machine leaves me stranded in the 1850s or 1950s).