diff --git a/.gitignore b/.gitignore
index 01bb277..312f210 100644
--- a/.gitignore
+++ b/.gitignore
@@ -17,3 +17,4 @@
 ch
 .vscode
 dist/
+.DS_Store
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 62b24e9..fca627f 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -18,8 +18,8 @@ On a Linux/macOS machine, you should be able to use `make` command to build, tes
 
 Install cobra dependencies: (required to generate new commands)
 
-```shell script
-go get github.com/spf13/cobra/cobra
+```
+go install github.com/spf13/cobra/cobra@v1.3.0
 ```
 
 Add new cobra command
diff --git a/README.md b/README.md
index 11b4e20..ac2686f 100644
--- a/README.md
+++ b/README.md
@@ -128,15 +128,19 @@ This environment is based on this repository: [csci104/docker](https://github.co
 #### Create the CSCI 350 Environment
 
 The commands here assume `csci350-work` is your homework folder in the current directory. Alternatively, you can provide the absolute path
-to wherever your homework is on your machine. For Windows, your volume command should look like `--volume "C:\Users\user\path\to\csci350:/work"`, on macOS your command should look like `--volume /Users/username/path/to/csci350:/work`.
+to wherever your homework is on your machine. For Windows, your volume command should look like `--volume "C:\Users\user\path\to\csci350:/xv6_docker"`, on macOS your command should look like `--volume /Users/username/path/to/csci350:/xv6_docker`.
 
 This environment is based on the this repository: [camerondurham/cs350-docker](https://github.com/camerondurham/cs350-docker)
 
-1. use `ch create` to create and save the environment settings
+1. find the absolute path to your `csci350` directory where you keep your homework (see [Filepaths in terminal](https://github.com/csci104/docker#filepaths-in-the-terminal) wiki from csci104/docker if you are having issues)
+    1. (macOS/Linux) navigate to your directory in the terminal and run `pwd`, the output should be something like `/Users/username/path/to/csci350`
+    2. (Windows Powershell) navigate to the directory in Powershell and run `Get-Location`, you will want the output like `C:\Users\Username\path\to\csci350`
+
+1. use `ch create` to create and save the environment settings, replacing `PATH_TO_YOUR_WORKDIR` with the path from step 1.
     ```bash
     ch create csci350 \
         --image camerondurham/cs350-docker:v1 \
-        --volume csci350-work:/xv6_docker \
+        --volume PATH_TO_YOUR_WORKDIR:/xv6_docker \
         --security-opt seccomp:unconfined \
         --port 7776:22 \
         --port 7777:7777 \
@@ -185,6 +189,24 @@ Flags:
 
 ```
 
+### `ch list`
+
+list all saved configs
+
+```txt
+Usage:
+  ch list [ENVIRONMENT_NAME]
+```
+
+### `ch delete`
+
+delete an environment from your `.ch.yaml` config file
+
+```
+Usage:
+  ch delete ENVIRONMENT_NAME [flags]
+```
+
 ### `ch start`
 
 start docker container in background and save container ID to config file
@@ -215,22 +237,32 @@ Usage:
   ch stop ENVIRONMENT_NAME
 ```
 
-### `ch list`
 
-list all saved configs
+### `ch running`
+
+list all running environments
 
 ```txt
 Usage:
-  ch list [ENVIRONMENT_NAME]
+  ch running
 ```
 
-### `ch running`
+### `ch update`
 
-list all running environments
+update your Docker image to the latest version or rebuild the container
 
 ```txt
 Usage:
-  ch running
+  ch update [ENVIRONMENT_NAME] [flags]
+```
+
+### `ch upgrade`
+
+check if you are running the latest version of `ch` and print install commands if an upgrade is available
+
+```txt
+Usage:
+  ch upgrade
 ```
 
 ## More Examples
diff --git a/cmd/create.go b/cmd/create.go
index fb08b30..5b43e7c 100644
--- a/cmd/create.go
+++ b/cmd/create.go
@@ -4,26 +4,31 @@ import (
 	"context"
 	"errors"
 	"fmt"
+	"log"
+	"os"
+	"path/filepath"
+	"strings"
+
 	"github.com/camerondurham/ch/cmd/util"
 	"github.com/docker/go-connections/nat"
 	"github.com/mitchellh/go-homedir"
 	"github.com/spf13/cobra"
 	"github.com/spf13/viper"
-	"log"
-	"os"
-	"path/filepath"
-	"strings"
 )
 
 // createCmd represents the create command
 var (
 	createCmd = &cobra.Command{
-		Use:   "create ENVIRONMENT_NAME {--file DOCKERFILE |--image DOCKER_IMAGE } [OPTIONS]",
+		Use:   "create ENVIRONMENT_NAME [FLAGS] {--file DOCKERFILE |--image DOCKER_IMAGE } [OPTIONS]",
 		Short: "create docker environment config",
 		Long: `Create docker environment config with new name.
+
+	You can use the following flag to replace an environment name if it already exists:
+		--replace					Replace existing named environment, if one exists already.
+
 	Will look for your Dockerfile in the current directory
 	if you do not explicitly set --file.
-	
+
 	To create environment from a Dockerfile, use:
 
 		--file DOCKERFILE			Path to Dockerfile. If context is used, filepath must be relative to that path.
@@ -35,7 +40,6 @@ var (
 
 	You can use the following options:
 
-		--replace					Replace existing named environment, if one exists
 		--volume list				Bind mount a volume
 		--shell PATH				Command to run for shell (i.e. /bin/sh, /bin/bash)
 		--cap-add CAPABILITY		Add Linux capability (i.e. SYS_PTRACE)
diff --git a/cmd/running.go b/cmd/running.go
index 55423f2..22f2f0e 100644
--- a/cmd/running.go
+++ b/cmd/running.go
@@ -17,7 +17,7 @@ var runningCmd = &cobra.Command{
 	Short: "list running environments",
 	Long: `List all running Docker containers created by the container-helper.
 Any Docker containers not managed by the container-helper will be ignored.
-To see all running containers, run: 
+To see all running containers, run:
 	docker ps`,
 	Run: RunningCmd,
 }