How does Shakespeare establish theme, character and plot in Act One of "As You Like It" ?

As in many of Shakespeare's comedies, the plot of As You Like It concerns lovers, and revolves around the overcoming of the obstacles to their love. After Act One, we have seen that Rosalind and Orlando are the central lovers of the play, and that Oliver and the Duke are the main impediments. As well as the theme of love, in Act One we see Shakespeare establishing the themes of jealousy and court versus country. …

…been born of another father"). As Celia comments, at court "the little foolery that wise men have makes a great show". Charles' need to approach Oliver before wrestling Orlando further illustrates the problems of court life - Charles fears repercussions should he offend the wrong people, though merely doing his job. Thus when Rosalind and Celia conspire to flee the court for the country, the grounds for an exploration into court-country differences have been established.