In preparing for the USA Computing Olympiad (USACO), a strategic and well-disciplined effort is needed to achieve the ultimate competitive success. First, you start by thoroughly learning the fundamentals of programming in C++, Java, or Python, with an added emphasis on data structures and algorithms. Then, start practicing on the online judge websites, like USACO's training pages, Codeforces, or AtCoder, to develop your problem-solving skills. It is imperative to study previous USACO problems to get a feel for the format and the level of difficulty. Also, joining an online community or studying with others can help support you and provide tips and resources. At the end of the day, the only way to succeed in USACO is with practice, learning from mistakes, and then definitely time management in contests.