To optimize online resources for UPSC preparation, aspirants should follow best practices such as curating reliable sources and establishing a structured learning schedule. They can use reputable platforms for test series and video lectures, ensuring content aligns with the syllabus. Bookmarking essential websites, educational blogs, and supplementing traditional study materials with online courses can enhance learning. Staying organized by creating a digital library for notes and resources is beneficial. Lastly, participating in online forums or social media groups focused on UPSC preparation can provide valuable insights, sharing of resources, and motivation.