set about

verbs

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"; "Let's get down to work now"