Definition of Set about

• begin to deal with; "approach a task"; "go about a difficult problem"; "approach a new project"
• enter upon an activity or enterprise
• 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"; "Lets get down to work now"