Another aspect of training is not just knowing how to use the technology, but to master the technology and find the hidden gems and higher level productivity tools to move from "functionally literate", to knowing the technology so well it's a natural extension of your day-to-day productivity.

BBC: Three missing ingredients of small business technology

The formally laid-out garden terraces to the south of the house have slight differences in elevation, but the house sits above them, raised on a basement hidden by patios at the level of the first floor.

WSJ: An American Renaissance Gem

He became a member of FlyerTalk frequent flyer forums and mastered advanced level booking techniques like hidden-city ticketing.

BBC: The future of travel search

If the camera is hidden in the mannequin, it changes that comfort level.

FORBES: Why Do Mannequins That Spy On Us Creep Us Out?

This range is the size of the European Alps with the tallest peaks reaching 3, 000m above sea-level - and yet they are still hidden below more than a 1, 000m of ice.

BBC: Antarctic ice volume measured

Fewer children are suffering violent deaths in Northern Ireland but the level of child abuse remains disturbing and often "hidden", according to a new report.

BBC: NI child abuse levels 'disturbing' says NSPCC report

While appropriations have some level of transparency, tax preferences often are obscurely drafted and dropped into larger bills, hidden from public view.

FORBES: Where to Cut the Federal Budget? Start by Killing Corporate Welfare