set about
     v 1: begin to deal with; "approach a task"; "go about a difficult
          problem"; "approach a new project" [syn: {go about}, {approach}]
     2: enter upon an activity or enterprise [syn: {undertake}, {attempt}]
     3: 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" [syn: {get down}, {begin}, {get}, {start
        out}, {start}, {set out}, {commence}] [ant: {end}]
Source: WordNet® 2.0