Try to split up main docs page

content/en/docs/contribution-guidelines/_index.md

@@ -1,6 +1,6 @@
 ---
 title: Contribution Guidelines
-weight: 10
+weight: 100
 description: How to contribute to SOPS
 ---
 

content/en/docs/installation/_index.md

@@ -0,0 +1,38 @@
+---
+title: "Installation"
+weight: 30
+description: How to install SOPS, or build it from source
+---
+
+## Stable release
+
+Binaries and packages of the latest stable release are available at
+<https://github.com/getsops/sops/releases>.
+
+## Development branch
+
+For the adventurous, unstable features are available in the
+[main](https://github.com/getsops/sops/commits/main/) branch, which you can install from source:
+
+``` bash
+$ mkdir -p $GOPATH/src/github.com/getsops/sops/
+$ git clone https://github.com/getsops/sops.git $GOPATH/src/github.com/getsops/sops/
+$ cd $GOPATH/src/github.com/getsops/sops/
+$ make install
+```
+
+(requires Go >= 1.25)
+
+If you don\'t have Go installed, set it up with:
+
+``` bash
+$ {apt,yum,brew} install golang
+$ echo 'export GOPATH=~/go' >> ~/.bashrc
+$ source ~/.bashrc
+$ mkdir $GOPATH
+```
+
+Or whatever variation of the above fits your system and shell.
+
+To use **SOPS** as a library, take a look at the [decrypt
+package](https://pkg.go.dev/github.com/getsops/sops/v3/decrypt).