diff --git a/errors.md b/errors.md
new file mode 100644
index 0000000..936ec07
--- /dev/null
+++ b/errors.md
@@ -0,0 +1,28 @@
+# Simple Note System, version 2
+## Error Code Reference
+
+### General Codes
+| Name         | Code | Meaning                               |
+|--------------|------|---------------------------------------|
+| ERR_NO_STORE |  5   | the SNS store needs to be initialized |
+|              |      |                                       |
+| ERR_NO_OPTS  |  10  | No mode argument was specified        |
+|              |      |   																		|
+| ERR_NO_ARGS  |  11  | A mode requiring an argument was      |
+|              |      | specified without an argument				  |
+|              |      |                                       |
+
+### Encryption-related codes
+|Name        | Code | Meaning                                 |
+|------------|------|-----------------------------------------|
+| ERR_NO_GPG | 100  | Encryption is enabled, but GPG is not   |
+|						 |      | installed       												|
+|						 |			|			 																	  |
+| ERR_NO_KEY | 110  | Encryption is enabled, but no recipient |
+|            |      | was specified                           |
+
+### Creation-related codes
+|Name             | Code | Meaning                            |
+|-----------------|------|------------------------------------|
+| ERR_NOTE_EXiSTS | 200  | The specified note already exists  |
+| ERR_NOTE_NO_READ| 205  | The specified note cannot be read  |
diff --git a/sns.sh b/sns.sh
index 2c195ec..911c62d 100755
--- a/sns.sh
+++ b/sns.sh
@@ -2,14 +2,44 @@
 XL_PRODUCT="Simple Note System"
 XL_VER="v2a"
 
-# Environment
+# Environment Constants
 readonly SNS_STORE="$HOME/.local/sns"
 readonly SNS_KEYFILE="$SNS_STORE/.pubkey"
-readonly SNS_DEPS=("gpg" "tree" "git")
+readonly SNS_DEPS=("gpg2" "tree" "git")
 readonly IFS=$'\n\t'
 set -euo pipefail
 
+readonly SNS_RED_COLOR='\033[1;31m'
+readonly SNS_YELLOW_COLOR='\033[1;33m'
+readonly SNS_RESET_COLOR='\033[0m'
+
+# Erroneous Exit Constants
+  
+  # Invocation Errors   
+    readonly SNS_ERR_NO_STORE=5 # The sns store needs to be initialized
+    readonly SNS_ERR_NO_OPTS=10 # No mode argument was specified
+    readonly SNS_ERR_NS_ARGS=11 # The specified mode requires an argument
+  
+  # Dependency Errors
+    readonly SNS_ERR_DEPS=20   # Base error - add the following codes
+    readonly SNS_ERR_NO_gpg2=1  # GPG is not installed 
+    readonly SNS_ERR_NO_tree=2 # Tree is not installed
+    readonly SNS_ERR_NO_git=3  # Git is not installed
+    
+# Global Variables
+typeset -i SNS_SID="$RANDOM"
+typeset -a SNS_ACTION=("")
+typeset -a MISSING_DEPS
+typeset -i SNS_EXIT=0
+declare    SNS_PUBKEY= 
+
 # Function Definitions
+# sns_printError     Prints an error message
+# sns_NoteHeader     Prints standard note header to stdout
+# sns_checkDeps      Checks the system for required dependencies
+# sns_checkStore     Checks if $SNS_STORE exists
+# sns_sanityCheck    Wrapper for sns_checkDeps and sns_checkStore
+# ----
 # sns_initStore      Initializes the SNS Store                             ( -i)
 # sns_printHelp      Prints help page                                      ( -h)
 # sns_list           Lists all notes in `tree` format                      (  *)
@@ -18,40 +48,18 @@ set -euo pipefail
 # sns_print          Prints note to stdout                                 ( -p)
 # sns_rm             Deletes note from store                               ( -d)
 # sns_gitPassthrough Passes through all instructions to git                (git)
-# sns_checkDeps      Checks the system for required dependencies
-# sns_checkStore     Checks if $SNS_STORE exists
-# sns_sanityCheck    Wrapper for sns_checkDeps and sns_checkStore
 
-function sns_initStore {
-  mkdir -p "$SNS_STORE"
-  echo $* | awk '{print $1}' > "$SNS_KEYFILE"
+function sns_printError(){
+  printf "$SNS_RED_COLOR!$SNS_RESET_COLOR - %s\n" "$@"
 }
-function sns_printHelp(){
-  printf "%s" "Import helpfile from sns v2"
-}
-function sns_list(){
-  cd "$SNS_STORE" || exit
-  tree -C --noreport "$(echo $* | awk '{print $1}')"
-}
-function sns_create(){
-  gpg -r "$SNS_PUBKEY" -o "echo $* | awk '{print $1}'" < /dev/null
-  sns_edit "echo $* | awk '{print $1}'"
-}
-function sns_print(){
-  gpg -d "echo $* | awk '{print $1}'"
-}
-function sns_rm(){
-  rm -f "echo $* | awk '{print $1}'"
-}
-function sns_gitPassthrough(){
-  cd "$SNS_STORE" || exit;
-  git "$@";
+function sns_NoteHeader(){
+  printf "%s\n%s\n" "Title:" "Date:"
 }
 function sns_checkDeps(){
   local SNS_RETURN="true";
   for DEP in "${SNS_DEPS[@]}"; do
-    if test  ! -e "$(which gpg 2>/dev/null)"; then
-      echo "Dependency missing: $DEP";
+    if test  ! -e "$(which "$DEP" 2>/dev/null)"; then
+      MISSING_DEPS+=("$DEP")
       SNS_RETURN="false";
     fi
   done
@@ -62,18 +70,112 @@ function sns_checkStore(){
 }
 function sns_sanityCheck {
   if ! sns_checkDeps; then
-    exit 10
+    SNS_EXIT="$SNS_ERR_DEPS"
+    for DEP in "${MISSING_DEPS[@]}"; do
+      local SNS_DEP_EC="\$ERR_NO_$DEP"
+      printError "Dependency %s not in path." "$DEP";
+      SNS_EXIT+=${!SNS_DEP_EC}
+    done
   fi
-  if ! sns_checkStore; then
-    if [ "$(echo "$SNS_ACTION" | awk '{print $1;}')" != "sns_initStore" ]; then
-      printf "%s\n" "Please run \`sns -i\` to initialize sns."
-      exit 20
+  
+  if [ -r "$SNS_STORE/.pubkey" ]; then
+    SNS_PUBKEY="$(cat "$SNS_STORE/.pubkey")"
+  elif ! sns_checkStore; then
+    if [ "$(echo "${SNS_ACTION[@]}" | awk '{print $1;}')" != "sns_initStore" ]; then
+      printError "The sns store does not exist."
+      printf "  - %s\n" "Please run \`sns -i [gpg-key]\` to initialize sns."
+      SNS_EXIT="$SNS_ERR_NO_STORE"
     fi
   fi
 }
+#----
+function sns_initStore {
+  mkdir -p "$SNS_STORE"
+  echo "$@" | awk '{print $1}' > "$SNS_KEYFILE"
+}
+function sns_printHelp(){
+    printf "%s" "usage: sns [-cedlp] <notebook/section/name>"
+    printf "\n%s%s%s" "usage: sns " "git" " ..."
+    printf "\n%s" "       sns [-hi]"
+
+    printf "\n%s" "  -c | --create : Create note"
+    printf "\n%s" "  -C | --config : Edit Config"
+    printf "\n%s" "  -d | --delete : Delete note"
+    printf "\n%s" "  -e | --edit   : Open note for editing"
+    printf "\n%s" "  -h | --help   : Display this message"
+    printf "\n%s" "  -i | --init   : Write default config and initalize SNS store"
+    printf "\n%s" "  -l | --list   : List all notes in NOTEBOOK"
+    printf "\n%s" "  -p | --print  : Print note to console"
+    printf "\n\n"
+}
+function sns_list(){
+  # Change directories to fix tree header
+    cd "$SNS_STORE" || exit; cd .. || exit;
+  # Print the tree
+    tree -C --noreport --prune "$(echo "$@" | awk '{print $1}')"
+}
+function sns_create(){
+  # Make sure the note doesn't already exist
+    if [ -r "$SNS_STORE/$(echo "$@" | awk '{print $1}')" ]; then 
+      sns_printError "Note already exists."
+      return
+    fi
+  
+  # Print the standard header to a temporary note
+    sns_NoteHeader > /tmp/"$SNS_SID" 
+  
+  # Edit the new note
+    sns_edit "$(echo "$@" | awk '{print $1}')"
+}
+function sns_edit(){
+  # Make the function more readable
+    local readonly SNS_NOTE="$SNS_STORE/$(echo "$@" | awk '{print $1}')"
+
+  # Test if edit was called from create
+    if [ ! -r /tmp/"$SNS_SID" ]; then gpg2 -d  -o /tmp/"$SNS_SID" "$SNS_NOTE"; fi
+    
+  # Edit the note
+    vim /tmp/"$SNS_SID"
+
+  # Make sure the notebook/section exists
+    if [ ! -d "$(dirname "$SNS_NOTE")" ]; then mkdir -p "$(dirname "$SNS_NOTE")"; fi
+  
+  # If the note previously existed, make a backup.
+    if [ -r "$SNS_NOTE" ]; then mv "$SNS_NOTE" "$SNS_NOTE.bk"; fi
+      
+  # Re-encrypt it to the store
+    gpg2 -r "$SNS_PUBKEY" -o "$SNS_NOTE" -e /tmp/"$SNS_SID"
+  
+  # If all went well, remove the backup
+    if [ -r "$SNS_NOTE" ]; then rm "$SNS_NOTE.bk"; fi
+}
+function sns_print(){
+  gpg2 -d "$SNS_STORE/$(echo "$@" | awk '{print $1}')"
+}
+function sns_rm(){
+  rm -f "$SNS_STORE/$(echo "$@" | awk '{print $1}')"
+}
+function sns_gitPassthrough(){
+  cd "$SNS_STORE" || exit;
+  git "$@";
+}
+# ----
 function sns_argParse(){
-  declare -ga SNS_ACTION=()
+  ARGS=($@)
+  #echo "${#ARGS}"
+  SNS_ACTION=()
   while getopts ":i:hc:e:p:d:" OPT; do
+ 
+    # If an option requiring an argument was passed without an argument,
+    # inform the user and set exit code to "$SNS_ERR_NS_ARGS"
+    case "${ARGS[!OPTIND]}" in 
+      -i|-c|-e|-p|-d)
+        if [ "${#ARGS}" -lt 2 ]; then
+          printError "A required argument was not given."
+          SNS_EXIT="$SNS_ERR_NS_ARGS"
+          return
+        fi
+    esac
     case "$OPT" in
       i)
         SNS_ACTION=("sns_initStore" "$OPTARG");;
@@ -89,12 +191,15 @@ function sns_argParse(){
         SNS_ACTION=("sns_rm $OPTARG");;
     esac
   done
+  
   if [ "${#SNS_ACTION[@]}" -eq 0 ]; then
     if [ "$(echo "$@" | awk '{print $1}')" == "git" ]; then
       SNS_ACTION=($@)
     else
       if [ -d "$SNS_STORE/$*" ]; then
-        SNS_ACTION=("sns_list" "./$*")
+        SNS_ACTION=("sns_list" "sns/$@")
+      else
+        SNS_ACTION=("sns_list" "sns")
       fi
     fi
   fi
@@ -102,6 +207,14 @@ function sns_argParse(){
 
 # Entry Point
 printf "%s\n%s\n" "$XL_PRODUCT" "$XL_VER"
+printf "\n"
+
 sns_argParse "$@"
 sns_sanityCheck
-"${SNS_ACTION[@]}"
+if [ "$SNS_EXIT" -eq 0 ]; then
+  eval "${SNS_ACTION[@]}"
+fi
+
+printf "\n"
+
+exit "$SNS_EXIT"