1、Git
https://git-scm.com# Reference
https://git-scm.com/docs# Book
https://git-scm.com/book/zh
2、GitHub
# Git 基本知识
https://docs.github.com/zh/get-started/git-basics# 使用 Git
https://docs.github.com/zh/get-started/using-git# 通过 SSH 连接到 GitHub
https://docs.github.com/zh/authentication/connecting-to-github-with-ssh
3、Gitee
# Git 大全
https://gitee.com/all-about-git# Git 命令学习
https://help.gitee.com/learn-Git-Branching# Git 知识大全
https://gitee.com/help/categories/43# 公钥管理
https://gitee.com/help/categories/38# 如何导入 GitHub 等第三方 Git 仓库
https://gitee.com/help/articles/4261
4、GitCode
# Git 入门
https://docs.gitcode.com/docs/help/home/general-reference/git# 安全管理
https://docs.gitcode.com/docs/help/home/user_center/security_management# markdown 语法
https://docs.gitcode.com/docs/help/home/general-reference/markdown
5、GitLab
# 使用 Git
https://gitlab.cn/docs/jh/topics/git# SSH 密钥
https://gitlab.cn/docs/jh/user/ssh# Markdown
https://gitlab.cn/docs/jh/user/markdown
# Use Git
https://docs.gitlab.com/topics/git# SSH keys
https://docs.gitlab.com/user/ssh# Markdown
https://docs.gitlab.com/user/markdown