diff --git a/src/SUMMARY.md b/src/SUMMARY.md
index 207b9c4..3a4d965 100644
--- a/src/SUMMARY.md
+++ b/src/SUMMARY.md
@@ -6,6 +6,7 @@
 - [Nix basics](./nixbasics/index.md)
   - [Flakes](./nixbasics/flakes.md)
   - [Types](./nixbasics/types.md)
+  - [Language](./nixbasics/language.md)
 - [Configuration](./configuration/index.md)
   - [Drivers](./configuration/drivers.md)
   - [GUI](./configuration/GUI.md)
diff --git a/src/configuration/clean.md b/src/configuration/clean.md
index 19755f9..a82d50c 100644
--- a/src/configuration/clean.md
+++ b/src/configuration/clean.md
@@ -1,7 +1,7 @@
 # Cleaning old packages
 
 By default, packages installed will be kept after each rebuild, even if they are not active anymore.
-You can manually garbage collect with `nix-collect-garbage -d` to remove all the old generations.
+You can manually garbage collect with `nix-collect-garbage -d` to remove all the old generations (`sudo` is needed for system packages).
 
 One can however do this automatically using the following:
 ```nix
diff --git a/src/configuration/hm.md b/src/configuration/hm.md
index 5d74292..dd79a78 100644
--- a/src/configuration/hm.md
+++ b/src/configuration/hm.md
@@ -60,7 +60,7 @@ This assumes that we are installing on an x86 system, if not, change the system
  
   # The home.packages option allows you to install Nix packages into your
   # environment.
-  home.packages = [
+  home.packages = with pkgs; [
     # # Adds the 'hello' command to your environment. It prints a friendly
     # # "Hello, world!" when run.
     # pkgs.hello
diff --git a/src/configuration/new.md b/src/configuration/new.md
index a129b00..d55e9c9 100644
--- a/src/configuration/new.md
+++ b/src/configuration/new.md
@@ -1 +1,22 @@
 # How to find new software and configure
+
+So, you have a system, but how do you now install software that you want to use?
+
+## Finding packages
+[search.nixos.org](https://search.nixos.org/packages?channel=unstable) is the way to search for packages.
+Lets say that you want to add `nnn` to your user via home-manager.
+First, search and make sure that `nnn` is available using the link earlier, then add it to the list `home.packages` in `home.nix`.
+If you want to add it to the system environment, then add it to the list `environment.systemPackages` in `configuration.nix`.
+
+## Finding options
+[search.nixos.org/options](https://search.nixos.org/options?channel=unstable) is the way to search for options.
+Lets say, you want to enable adb, you can search adb.
+The first option is `programs.adb.enable`, which says it enables adb, but you need to add your user to the `adbusers` group.
+If you want to enable a service, such as `tailscale`, searching for it shows how to enable it.
+But `service.tailscale` has a lot of extra options, that regulate how the service works.
+`service.tailscale.useRoutingFeatures` for example determines how the system should handle routing.
+
+## Finding options for Home-manager
+[home-manager-options.extranix.com](https://home-manager-options.extranix.com/) is the way to search for options for use in home-manager.
+It works in the same way as [Finding options](#finding-options), but using the previous link.
+It would allow one to find and configure `yazi` for example.
diff --git a/src/nixbasics/flakes.md b/src/nixbasics/flakes.md
index b250b3b..430f585 100644
--- a/src/nixbasics/flakes.md
+++ b/src/nixbasics/flakes.md
@@ -2,8 +2,8 @@
 Flakes are as of writing this guide still an experimental feature.
 However, flakes provide concepts that I feel are fundamental to the concepts of Nix.
 
-What flakes does is similar to `package-lock.json` from **npm**.
-It makes sure that the inputs that are used, for example **nixpkgs**, are kept to a specific version.
+What flakes does is similar to `package-lock.json` from `npm`.
+It makes sure that the inputs that are used, for example `nixpkgs`, are kept to a specific version.
 
 To enable flakes to your config, add the following
 ```nix
diff --git a/src/nixbasics/language.md b/src/nixbasics/language.md
new file mode 100644
index 0000000..403a548
--- /dev/null
+++ b/src/nixbasics/language.md
@@ -0,0 +1 @@
+# Language