diff --git a/config.go b/config.go
index b84a476..8b3472c 100644
--- a/config.go
+++ b/config.go
@@ -9,58 +9,82 @@ import (
 	"os"
 )
 
+// Struct for unmarshaling of opensend TOML configs
 type Config struct {
 	Receiver ReceiverConfig
 	Sender   SenderConfig
 	Targets  map[string]map[string]string
 }
 
+// Config section for receiver
 type ReceiverConfig struct {
 	DestDir      string `toml:"destinationDirectory"`
 	SkipZeroconf bool
 	WorkDir      string `toml:"workingDirectory"`
 }
 
+// Config section for sender
 type SenderConfig struct {
 	WorkDir string `toml:"workingDirectory"`
 }
 
+// Attempt to find config path
 func GetConfigPath() string {
 	// Use ConsoleWriter logger
 	log.Logger = log.Output(zerolog.ConsoleWriter{Out: os.Stderr}).Hook(FatalHook{})
+	// Possible config locations
 	configLocations := []string{"~/.config/opensend.toml", "/etc/opensend.toml"}
+	// For every possible location
 	for _, configLocation := range configLocations {
+		// Expand path (~ -> home dir and os.ExpandEnv())
 		expandedPath := ExpandPath(configLocation)
+		// If file does not exist
 		if _, err := os.Stat(expandedPath); errors.Is(err, os.ErrNotExist) {
+			// Skip
 			continue
 		}
+		// Return path with existing file
 		return expandedPath
 	}
+	// If all else fails, return empty screen
 	return ""
 }
 
+// Create new config object using values from given path
 func NewConfig(path string) *Config {
 	// Use ConsoleWriter logger
 	log.Logger = log.Output(zerolog.ConsoleWriter{Out: os.Stderr}).Hook(FatalHook{})
+	// Create new empty config struct
 	newConfig := &Config{}
+	// Set config defaults
 	newConfig.SetDefaults()
+	// If path is provided
 	if path != "" {
+		// Read file at path
 		confData, err := ioutil.ReadFile(path)
 		if err != nil {
 			log.Fatal().Err(err).Msg("Error reading config")
 		}
+		// Unmarshal config data
 		err = toml.Unmarshal(confData, newConfig)
 		if err != nil {
 			log.Fatal().Err(err).Msg("Error unmarshalling toml")
 		}
 	}
+	// Return new config struct
 	return newConfig
 }
 
+// Set config defaults
 func (config *Config) SetDefaults() {
+	// Set destination directory to $HOME/Downloads
 	config.Receiver.DestDir = ExpandPath("~/Downloads")
+	// Set receiver working directory to $HOME/.opensend
 	config.Receiver.WorkDir = ExpandPath("~/.opensend")
+	// Set do not skip zeroconf
 	config.Receiver.SkipZeroconf = false
+	// Set sender working directory to $HOME/.opensend
 	config.Sender.WorkDir = ExpandPath("~/.opensend")
+	// Set targets to an empty map[string]map[string]string
 	config.Targets = map[string]map[string]string{}
 }
diff --git a/extra.go b/extra.go
index 98d1f79..e6ff72e 100644
--- a/extra.go
+++ b/extra.go
@@ -11,14 +11,20 @@ import (
 func ExpandPath(s string) string {
 	// Use ConsoleWriter logger
 	log.Logger = log.Output(zerolog.ConsoleWriter{Out: os.Stderr}).Hook(FatalHook{})
+	// Get user's home directory
 	homeDir, err := os.UserHomeDir()
 	if err != nil {
 		log.Fatal().Err(err).Msg("Error getting home directory")
 	}
+	// Expand any environment variables in string
 	expandedString := os.ExpandEnv(s)
+	// If string starts with ~
 	if strings.HasPrefix(expandedString, "~") {
+		// Replace ~ with user's home directory
 		expandedString = strings.Replace(expandedString, "~", homeDir, 1)
 	}
+	// Clean file path
 	expandedString = filepath.Clean(expandedString)
+	// Return expanded string
 	return expandedString
 }