diff --git a/README.md b/README.md
index 948192e..19ae081 100644
--- a/README.md
+++ b/README.md
@@ -1,15 +1,18 @@
 # BioArchLinux on WSL
 
-## Usage
+## Download
 
 Download [wsl tar file](https://repo.bioarchlinux.org/wsl) from [any mirror](https://raw.githubusercontent.com/BioArchLinux/mirror/main/mirrorlist.bio) of BioArchLinux.
 
-Specific a `StoragePath` and run the following command under the tar file directory.
+## Import to WSL
+
+You have to enable wsl first. Specific a `StoragePath` and run the following command under the tar file directory.
 
 ```
 wsl --import BioArchLinux StoragePath .\bioarchlinux.tar
 wsl -d BioArchLinux
 ```
+## Choose mirror
 
 then you need to choose a mirror of archlinux and bioarchlinux
 
@@ -24,6 +27,7 @@ choose mirror bioarchlinux from [here](https://raw.githubusercontent.com/BioArch
 ```
 echo 'Server = https://mirrors.sdu.edu.cn/bioarchlinux/$arch' > /etc/pacman.d/mirrorlist.bio
 ```
+## Use BioArchLinux
 
 Finally, you can install any packages from BioArchLinux
 ```