Update docs

Author: hwdsl2

README-zh.md

@@ -10,7 +10,7 @@
 
 另见：[WireGuard](https://github.com/hwdsl2/wireguard-install/blob/master/README-zh.md) 和 [IPsec VPN](https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/README-zh.md) 服务器一键安装脚本。
 
-**[» :book: Book: Build Your Own VPN Server](docs/vpn-book.md)** [[English](https://books2read.com/vpnguide?store=amazon) | [中文](https://books2read.com/vpnguidezh) | [Español](https://books2read.com/vpnguidees?store=amazon) | [Deutsch](https://books2read.com/vpnguidede?store=amazon) | [Français](https://books2read.com/vpnguidefr?store=amazon) | [Italiano](https://books2read.com/vpnguideit?store=amazon) | [NL](https://books2read.com/vpnguidenl?store=amazon) | [PT](https://books2read.com/vpnguidept?store=amazon) | [日本語](https://books2read.com/vpnguideja?store=amazon)]
+**[» :book: Book: 搭建自己的 VPN 服务器分步指南](docs/vpn-book-zh.md)** [[中文](https://books2read.com/vpnguidezh) | [English](https://books2read.com/vpnguide?store=amazon) | [Español](https://books2read.com/vpnguidees?store=amazon) | [Deutsch](https://books2read.com/vpnguidede?store=amazon) | [Français](https://books2read.com/vpnguidefr?store=amazon) | [Italiano](https://books2read.com/vpnguideit?store=amazon) | [NL](https://books2read.com/vpnguidenl?store=amazon) | [PT](https://books2read.com/vpnguidept?store=amazon) | [日本語](https://books2read.com/vpnguideja?store=amazon)]
 
 ## 功能特性
 
@@ -153,7 +153,7 @@ To customize options, you may also run this script without arguments.
 
 **[配置 OpenVPN 客户端](docs/clients-zh.md)**
 
-**阅读 [:book: VPN book](https://ko-fi.com/post/Support-this-project-and-get-access-to-supporter-o-X8X5FVFZC) 以访问 [额外内容](https://ko-fi.com/post/Support-this-project-and-get-access-to-supporter-o-X8X5FVFZC)。**
+**阅读 [:book: VPN book](docs/vpn-book-zh.md) 以访问 [额外内容](https://ko-fi.com/post/Support-this-project-and-get-access-to-supporter-o-X8X5FVFZC)。**
 
 开始使用自己的专属 VPN! :sparkles::tada::rocket::sparkles:
 

README.md

@@ -153,7 +153,7 @@ Get your computer or device to use the VPN. Please refer to:
 
 **[Configure OpenVPN Clients](docs/clients.md)**
 
-**Read [:book: VPN book](https://ko-fi.com/post/Support-this-project-and-get-access-to-supporter-o-O5O7FVF8J) to access [extra content](https://ko-fi.com/post/Support-this-project-and-get-access-to-supporter-o-O5O7FVF8J).**
+**Read [:book: VPN book](docs/vpn-book.md) to access [extra content](https://ko-fi.com/post/Support-this-project-and-get-access-to-supporter-o-O5O7FVF8J).**
 
 Enjoy your very own VPN! :sparkles::tada::rocket::sparkles:
 

docs/clients-zh.md

@@ -8,7 +8,7 @@
 
 要管理 OpenVPN 客户端，请再次运行安装脚本：`sudo bash openvpn.sh`。
 
-阅读 [:book: VPN book](https://ko-fi.com/post/Support-this-project-and-get-access-to-supporter-o-X8X5FVFZC) 以了解配置和管理 OpenVPN 客户端的分步说明。
+阅读 [:book: VPN book](vpn-book-zh.md) 以了解配置和管理 OpenVPN 客户端的分步说明。
 
 <details>
 <summary>

docs/clients.md

@@ -8,7 +8,7 @@ To add a VPN connection, first securely transfer the generated `.ovpn` file to y
 
 To manage OpenVPN clients, run the install script again: `sudo bash openvpn.sh`.
 
-Read [:book: VPN book](https://ko-fi.com/post/Support-this-project-and-get-access-to-supporter-o-O5O7FVF8J) to learn step-by-step instructions to configure and manage OpenVPN clients.
+Read [:book: VPN book](vpn-book.md) to learn step-by-step instructions to configure and manage OpenVPN clients.
 
 <details>
 <summary>

docs/vpn-book-zh.md

@@ -0,0 +1,17 @@
+[« 返回主页](../README-zh.md) | [English](vpn-book.md) | [中文](vpn-book-zh.md)
+
+# 搭建自己的 VPN 服务器分步指南
+
+本书是搭建你自己的 IPsec VPN, OpenVPN 和 WireGuard 服务器的分步指南。提供电子书和平装书格式。
+
+本书有以下语言版本：[简体中文](https://books2read.com/vpnguidezh), [繁體中文](https://books2read.com/vpnguidezht), [English](https://books2read.com/vpnguide?store=amazon), [Español](https://books2read.com/vpnguidees?store=amazon), [Deutsch](https://books2read.com/vpnguidede?store=amazon), [Français](https://books2read.com/vpnguidefr?store=amazon), [Italiano](https://books2read.com/vpnguideit?store=amazon), [Nederlands](https://books2read.com/vpnguidenl?store=amazon), [Português](https://books2read.com/vpnguidept?store=amazon), [日本語](https://books2read.com/vpnguideja?store=amazon).
+
+你还可以在同一系列书籍中找到有关搭建你自己的 VPN 服务器的综合/完整指南。有以下语言版本：[简体中文](https://books2read.com/vpnzh), [繁體中文](https://books2read.com/vpnzht), [English](https://books2read.com/vpn), [Español](https://books2read.com/vpnes), [Deutsch](https://books2read.com/vpnde), [Français](https://books2read.com/vpnfr), [Italiano](https://books2read.com/vpnit), [日本語](https://books2read.com/vpnja?store=amazon).
+
+作者页面：https://amazon.com/author/linsong
+
+## 介绍视频 (YouTube)
+
+[![Intro video 1 on YouTube](images/video-thumbnail-1.jpg)](https://www.youtube.com/watch?v=e5mbQCk-XPc)
+
+[![Intro video 2 on YouTube](images/video-thumbnail-2.jpg)](https://www.youtube.com/watch?v=e8S_MQ_bdcA)

docs/vpn-book.md

@@ -1,12 +1,12 @@
-[« Back to home page](../README.md)
+[« Back to home page](../README.md) | [English](vpn-book.md) | [中文](vpn-book-zh.md)
 
 # Build Your Own VPN Server: A Step by Step Guide
 
 This book is a step-by-step guide to building your own IPsec VPN, OpenVPN and WireGuard server. Available in eBook, audiobook and paperback formats.
 
-This book is available in: [English](https://books2read.com/vpnguide?store=amazon), [中文](https://books2read.com/vpnguidezh), [Español](https://books2read.com/vpnguidees?store=amazon), [Deutsch](https://books2read.com/vpnguidede?store=amazon), [Français](https://books2read.com/vpnguidefr?store=amazon), [Italiano](https://books2read.com/vpnguideit?store=amazon), [Nederlands](https://books2read.com/vpnguidenl?store=amazon), [Português](https://books2read.com/vpnguidept?store=amazon), [日本語](https://books2read.com/vpnguideja?store=amazon).
+This book is available in: [English](https://books2read.com/vpnguide?store=amazon), [简体中文](https://books2read.com/vpnguidezh), [繁體中文](https://books2read.com/vpnguidezht), [Español](https://books2read.com/vpnguidees?store=amazon), [Deutsch](https://books2read.com/vpnguidede?store=amazon), [Français](https://books2read.com/vpnguidefr?store=amazon), [Italiano](https://books2read.com/vpnguideit?store=amazon), [Nederlands](https://books2read.com/vpnguidenl?store=amazon), [Português](https://books2read.com/vpnguidept?store=amazon), [日本語](https://books2read.com/vpnguideja?store=amazon).
 
-Also available: A [comprehensive guide](https://books2read.com/vpn) to building your own VPN server, which you can find in the same book series or on the author page.
+Also available: A comprehensive/complete guide to building your own VPN server, which you can find in the same book series. Available in: [English](https://books2read.com/vpn), [简体中文](https://books2read.com/vpnzh), [繁體中文](https://books2read.com/vpnzht), [Español](https://books2read.com/vpnes), [Deutsch](https://books2read.com/vpnde), [Français](https://books2read.com/vpnfr), [Italiano](https://books2read.com/vpnit), [日本語](https://books2read.com/vpnja?store=amazon).
 
 Author page: https://amazon.com/author/linsong