Economics & Finance入门个人预算管理用实用的预算技能掌控你的财务。学习 50/30/20 法则、建立应急基金、有效管理债务、设定储蓄目标，并制定一个你能坚持执行的预算计划。约 15 分钟8 个步骤开始模块
Economics & Finance进阶加密货币基础探索加密货币的世界：区块链技术、挖矿、共识机制、钱包、智能合约、DeFi，以及每位加密货币投资者都应了解的安全注意事项。约 25 分钟10 个步骤开始模块
History & Geography进阶Age of ExplorationNavigate the Age of Exploration — Portuguese and Spanish voyages, Columbus, Magellan, the Silk Road, and the colonial impact on the world.约 25 分钟10 个步骤开始模块
Cybersecurity高级Ethical Hacking IntroLearn the methodology, tools, and ethics of penetration testing — from reconnaissance and vulnerability assessment to exploitation, reporting, and responsible disclosure.约 35 分钟12 个步骤开始模块
History & Geography入门Geography: The 7 ContinentsLearn about the seven continents — their features, climates, populations, and major landmarks.约 15 分钟8 个步骤开始模块
Cybersecurity进阶Network FundamentalsUnderstand how computer networks work — from the OSI and TCP/IP models to IP addressing, DNS, firewalls, VPNs, and the CIA triad of information security.约 25 分钟10 个步骤开始模块
Cybersecurity进阶Web Security IntroExplore the most critical web application vulnerabilities — XSS, SQL injection, CSRF, and more — and learn the defenses that protect modern web applications.约 25 分钟10 个步骤开始模块
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