diff --git a/README-zh.md b/README-zh.md
index 9e3ff29..e50a61a 100644
--- a/README-zh.md
+++ b/README-zh.md
@@ -1,4 +1,4 @@
-[English](README.md) | [中文](README-zh.md)
+[English](README.md) | [中文](README-zh.md) | [Libro en Español](https://books2read.com/vpnguidees?store=amazon)
 
 # IPsec VPN 服务器一键安装脚本
 
diff --git a/README.md b/README.md
index 1da2f0b..b990cba 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-[English](README.md) | [中文](README-zh.md)
+[English](README.md) | [中文](README-zh.md) | [Libro en Español](https://books2read.com/vpnguidees?store=amazon)
 
 # IPsec VPN Server Auto Setup Scripts
 
diff --git a/docs/ikev2-howto-zh.md b/docs/ikev2-howto-zh.md
index 4274a67..0449f96 100644
--- a/docs/ikev2-howto-zh.md
+++ b/docs/ikev2-howto-zh.md
@@ -912,7 +912,7 @@ chmod +x /opt/src/ikev2.sh && ln -s /opt/src/ikev2.sh /usr/bin 2>/dev/null
 
 **注：** 默认情况下，运行 VPN 安装脚本时会自动配置 IKEv2。你可以跳过此部分并转到 [配置 IKEv2 VPN 客户端](#配置-ikev2-vpn-客户端)。
 
-**重要：** 在继续之前，你应该已经成功地 [搭建自己的 VPN 服务器](../README-zh.md)。**Docker 用户请看 [这里](https://github.com/hwdsl2/docker-ipsec-vpn-server/blob/master/README-zh.md#配置并使用-ikev2-vpn)**。
+**重要：** 在继续之前，你应该已经成功地 [搭建自己的 VPN 服务器](../README-zh.md)。Docker 用户请看 [配置并使用 IKEv2 VPN](https://github.com/hwdsl2/docker-ipsec-vpn-server/blob/master/README-zh.md#配置并使用-ikev2-vpn)。
 
 使用这个 [辅助脚本](../extras/ikev2setup.sh) 来自动地在 VPN 服务器上配置 IKEv2：
 
diff --git a/docs/ikev2-howto.md b/docs/ikev2-howto.md
index dcb725b..efe0ba8 100644
--- a/docs/ikev2-howto.md
+++ b/docs/ikev2-howto.md
@@ -914,7 +914,7 @@ chmod +x /opt/src/ikev2.sh && ln -s /opt/src/ikev2.sh /usr/bin 2>/dev/null
 
 **Note:** By default, IKEv2 is automatically set up when running the VPN setup script. You may skip this section and continue to [configure IKEv2 VPN clients](#configure-ikev2-vpn-clients).
 
-**Important:** Before continuing, you should have successfully [set up your own VPN server](https://github.com/hwdsl2/setup-ipsec-vpn). **Docker users, see [here](https://github.com/hwdsl2/docker-ipsec-vpn-server/blob/master/README.md#configure-and-use-ikev2-vpn)**.
+**Important:** Before continuing, you should have successfully [set up your own VPN server](https://github.com/hwdsl2/setup-ipsec-vpn). Docker users, see [Configure and use IKEv2 VPN](https://github.com/hwdsl2/docker-ipsec-vpn-server/blob/master/README.md#configure-and-use-ikev2-vpn).
 
 Use this [helper script](../extras/ikev2setup.sh) to automatically set up IKEv2 on the VPN server:
 
diff --git a/docs/images/badges/docker-stars.svg b/docs/images/badges/docker-stars.svg
index 7884647..dc47ec1 100644
--- a/docs/images/badges/docker-stars.svg
+++ b/docs/images/badges/docker-stars.svg
@@ -1 +1 @@
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