Answer: gotoit

AnswerCrossword Clue
GOTOIT

"Begin!"

GOTOIT

"Knock yourself out!"

GOTOIT

"Dig in!"

GOTOIT
"Begin"
GOTOIT
Begin immediately
GOTOITBegin
GOTOIT"Get busy!"
GOTOITGet cracking
GOTOITGet started
GOTOITExhortation urging action.
GOTOITWords of encouragement
GOTOIT"Get cracking!"
GOTOIT"Get started!"