Learn how to do anything with wikiHow, the world's most popular how-to website. Easy, well-researched, and trustworthy instructions for everything you want to know.

A user-generated, editable, collaborative knowledge base that includes professional knowledge and experience from around the world. 由用户生成的、可编辑的、协作的知识库，其中包含来自全球各地的专业知识和经验。（需科学上网）

Discord is the easiest way to talk over voice, video, and text. Talk, chat, hang out, and stay close with your friends and communities. 广受欢迎的即时通讯平台，现在已经扩展到各种不同的兴趣社群，用户可以加入或创建服务器（相当于一个社区或群组）

知识发现网络平台—面向海内外读者提供中国学术文献、外文文献、学位论文、报纸、会议、年鉴、工具书等各类资源统一检索、统一导航、在线阅读和下载服务。涵盖基础科学、文史哲、工程科技、社会科学、农业、经济与管理科学、医药卫生、信息科技等十大领域。

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GitHub is where over 100 million developers shape the future of software, together. Contribute to the open source community, manage your Git repositories, review code like a pro, track bugs and features, power your CI/CD and DevOps workflows, and secure code before you commit it.