Candidates can refer to various resources for developing analytical writing skills. Books like "A Writer's Guide to Research" and "The Elements of Style" provide fundamental writing techniques. Online platforms such as Coursera and edX offer courses focused on writing skills, including essay composition and critical analysis. Participating in online forums or writing workshops can also provide valuable feedback. Additionally, practicing with past UPSC papers allows candidates to understand the expectations of the examiners while honing their ability to present arguments clearly and persuasively.