set about is a verb meaning "begin to deal with". It carries 3 recorded senses.
take the first step or steps in carrying out an action
“We began working at dawn”
“Who will start?”
“Get working as soon as the sun rises!”
“The first tourists began to arrive in Cambodia”
“He began early in the day”
“Let's get down to work now”
Definitions, synonyms and semantic relations for set about come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.