diff --git a/docs/course/c_c++.md b/docs/course/c_c++.md
index 6e6b6a2..33ab51b 100644
--- a/docs/course/c_c++.md
+++ b/docs/course/c_c++.md
@@ -10,7 +10,12 @@ Github地址: https://github.com/federico-busato/Modern-CPP-Programming
This document is intended for knowledgeable users of C (or any other language using a C-like grammar, like Perl or Java) who would like to know more about, or make the transition to, C++. This document is the main textbook for Frank's C++ programming courses, which are yearly organized at the University of Groningen. The C++ Annotations do not cover all aspects of C++, though. In particular, C++'s basic grammar is not covered when equal to C's grammar. Any basic book on C may be consulted to refresh that part of C++'s grammar.
- 在线阅读地址: http://www.icce.rug.nl/documents/cplusplus/
+ 在线阅读地址:
+
+ 1. http://www.icce.rug.nl/documents/cplusplus/
+ 2. https://fbb-git.gitlab.io/cppannotations/
+
+
## C++ Concurrency In Action
@@ -22,4 +27,24 @@ C++ Concurrency In Action（C++并发编程）
本参考将介绍在 Microsoft C++ 编译器中实现的 C++ 编程语言。 本文的结构基于 Margaret Ellis 和 Bjarne Stroustrup 撰写的《C++ 参考手册批注》和 ANSI/ISO C++ 国际标准 (ISO/IEC FDIS 14882)。 本文涵盖了 C++ 语言功能的 Microsoft 专用实现。
-在线阅读地址: https://learn.microsoft.com/zh-cn/cpp/cpp/cpp-language-reference?view=msvc-170
\ No newline at end of file
+在线阅读地址: https://learn.microsoft.com/zh-cn/cpp/cpp/cpp-language-reference?view=msvc-170
+
+## [tutorialspoint.com] C++ Tutorial
+
+C++ is a middle-level programming language developed by Bjarne Stroustrup starting in 1979 at Bell Labs. C++ runs on a variety of platforms, such as Windows, Mac OS, and the various versions of UNIX. This C++ tutorial adopts a simple and practical approach to describe the concepts of C++ for beginners to advanded software engineers.
+
+在线阅读地址：https://www.tutorialspoint.com/cplusplus/index.htm
+
+## [wikibooks.org]C++ Programming
+
+This book covers the C++ programming language, its interactions with software design and real life use of the language. It is presented in a series of chapters as an introductory prior to advance courses but can also be used as a reference book. This is an open work; if you find any problems with terms or concepts you can help by contributing to it; your participation is needed and welcomed! You are also welcomed to state any preference, shortcomings, vision for the actual book content, structure or other conceptual matters.
+
+在线阅读地址：https://en.wikibooks.org/wiki/C%2B%2B_Programming
+
+## [learncpp.com] Learn C++
+
+LearnCpp.com is a free website devoted to teaching you how to program in modern C++. The lessons on this site will walk you through all the steps needed to write, compile, and debug your C++ programs. No prior programming experience is necessary, but programmers of all levels will benefit from our best practices, tips, and insights.
+
+Becoming an expert won’t happen overnight, but with a bit of patience, you’ll get there. And LearnCpp.com will show you the way.
+
+在线阅读地址: https://www.learncpp.com/
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diff --git a/docs/course/network.md b/docs/course/network.md
new file mode 100644
index 0000000..af4d8e6
--- /dev/null
+++ b/docs/course/network.md
@@ -0,0 +1,7 @@
+# 网络
+
+## Linux network internals
+
+Start learning with basic concepts like Key problems with networking, Network interface card (NIC) device drivers, System initialization, Layer 2 (link-layer) tasks implementation and problems based on these data asked in product based tier etc.
+
+
\ No newline at end of file
diff --git a/docs/video/Go.md b/docs/video/Go.md
index 5cd1c6b..0371ecf 100644
--- a/docs/video/Go.md
+++ b/docs/video/Go.md
@@ -12,4 +12,16 @@ Github地址: https://github.com/techschool/simplebank
## 【幼麟实验室】Golang合辑
-
\ No newline at end of file
+
+
+## Mastering Multithreading Programming with Go (Golang)
+
+Udemy: https://www.udemy.com/course/multithreading-in-go-lang/
+
+
+
+## Working with Concurrency in Go (Golang)
+
+Udemy: https://www.udemy.com/course/working-with-concurrency-in-go-golang/
+
+
\ No newline at end of file
diff --git a/mkdocs.yml b/mkdocs.yml
index 7467387..33fcf96 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -63,6 +63,7 @@ nav:
- 编程:
- 操作系统:
- 视频: video/os.md
+ - 网络: course/network.md
- 数据结构与算法:
- 视频: video/Data structures.md
- C/C++: