Possible Clues:

• Finger perhaps discovering how to make a hole?
• "Take note, man"
• Toe, for one
• With toe, turn over something
• Do the spadework on it that's on hand
• PIN part
• 1, 2, or 3
• Only a small number understand computer science
• Savvy 1, for example
• Need a bit of a hand to do this in garden?