diff --git a/config/config.go b/config/config.go
index b8924b6..f48d341 100644
--- a/config/config.go
+++ b/config/config.go
@@ -7,8 +7,10 @@ import (
 	"github.com/spf13/viper"
 )
 
+// Key represents a particular config flag.
 type Key string
 
+// These constants are the list of keys that can be used.
 const (
 	Environment Key = `app.environment`
 	Port        Key = `app.port`
@@ -20,18 +22,17 @@ const (
 	DBDatabase  Key = `db.database`
 )
 
+// GetString returns the string value of the provided config key.
 func (k Key) GetString() string {
 	return viper.GetString(string(k))
 }
 
-func InitDefault() {
+// Init sets all of the viper config parameters.
+func Init() {
 
 	viper.SetDefault(string(Environment), "local")
 	viper.SetDefault(string(Port), "8080")
 
-}
-
-func Init() {
 	log.Print("Initialising config...")
 	viper.SetConfigName("config")
 	viper.SetConfigType("yaml")
diff --git a/db/postgres.go b/db/postgres.go
index 1fe4413..33a40fe 100644
--- a/db/postgres.go
+++ b/db/postgres.go
@@ -12,6 +12,8 @@ import (
 	"gitea.deepak.science/deepak/gogmagog/util"
 	"github.com/golang-migrate/migrate/v4"
 	"github.com/golang-migrate/migrate/v4/database/postgres"
+
+	// Blank imports to provide drivers.
 	_ "github.com/golang-migrate/migrate/v4/source/file"
 	_ "github.com/jackc/pgx/v4/stdlib"
 )
@@ -20,7 +22,8 @@ type postgresStore struct {
 	db *sqlx.DB
 }
 
-func GetStore() *postgresStore {
+// GetStore provides a store to back the model based on a postgres connection.
+func GetStore() models.Store {
 
 	if config.DBType.GetString() != "postgres" {
 		log.Fatalf("Unsupported database type: " + config.DBType.GetString())
diff --git a/main.go b/main.go
index 3c2374a..92bab00 100644
--- a/main.go
+++ b/main.go
@@ -39,6 +39,7 @@ func main() {
 
 }
 
+// Hello is method here to be testable.
 func Hello() string {
 	return "Hello, world!\n"
 }
diff --git a/models/action.go b/models/action.go
index e45e6c7..3e2962b 100644
--- a/models/action.go
+++ b/models/action.go
@@ -4,6 +4,7 @@ import (
 	"time"
 )
 
+// Action represents a single action item.
 type Action struct {
 	ActionID          int64
 	ActionDescription string
@@ -11,6 +12,7 @@ type Action struct {
 	UpdatedAt         time.Time
 }
 
+// Actions returns all actions from the model.
 func (m *Model) Actions() ([]*Action, error) {
 	return m.SelectActions()
 }
diff --git a/models/models.go b/models/models.go
index 68cf2c5..87d2194 100644
--- a/models/models.go
+++ b/models/models.go
@@ -1,14 +1,17 @@
 package models
 
-type store interface {
+// Store represents the backing store.
+type Store interface {
 	SelectActions() ([]*Action, error)
 	SelectPlans() ([]*Plan, error)
 }
 
+// Model represents a current model item.
 type Model struct {
-	store
+	Store
 }
 
-func New(store store) *Model {
-	return &Model{store: store}
+// New creates an instance of the model using the passed in store.
+func New(store Store) *Model {
+	return &Model{Store: store}
 }
diff --git a/models/plan.go b/models/plan.go
index 9080663..fff145b 100644
--- a/models/plan.go
+++ b/models/plan.go
@@ -4,11 +4,13 @@ import (
 	"time"
 )
 
+// Plan represents a single day's agenda of actions.
 type Plan struct {
 	PlanID   int64
 	PlanDate time.Time
 }
 
+// Plans returns all plans in the model.
 func (m *Model) Plans() ([]*Plan, error) {
 	return m.SelectPlans()
 }
diff --git a/util/snake.go b/util/snake.go
index cb368bf..68d5ca0 100644
--- a/util/snake.go
+++ b/util/snake.go
@@ -2,6 +2,7 @@ package util
 
 import "unicode"
 
+// ToSnake converts CamelCase to snake_case.
 func ToSnake(in string) string {
 	runes := []rune(in)
 	length := len(runes)