diff --git a/api.go b/api.go
index a8b7af0..b02790b 100644
--- a/api.go
+++ b/api.go
@@ -104,7 +104,7 @@ func (h *Headscale) RegistrationHandler(c *gin.Context) {
 			return
 		}
 
-		log.Println("Hey! Not registered. Not asking for key rotation. Send a passive-agressive authurl to register")
+		log.Println("Hey! Not registered. Not asking for key rotation. Send a passive-aggressive authurl to register")
 		resp.AuthURL = fmt.Sprintf("%s/register?key=%s",
 			h.cfg.ServerURL, mKey.HexString())
 		respBody, err := encode(resp, &mKey, h.privateKey)
diff --git a/app.go b/app.go
index df895ec..9047c9b 100644
--- a/app.go
+++ b/app.go
@@ -114,10 +114,10 @@ func (h *Headscale) Serve() error {
 			go func() {
 				log.Fatal(http.ListenAndServe(":http", m.HTTPHandler(http.HandlerFunc(h.redirect))))
 			}()
+			err = s.ListenAndServeTLS("", "")
 		} else {
 			return errors.New("Unknown value for TLSLetsEncryptChallengeType")
 		}
-		err = s.ListenAndServeTLS("", "")
 	} else if h.cfg.TLSCertPath == "" {
 		if !strings.HasPrefix(h.cfg.ServerURL, "http://") {
 			fmt.Println("WARNING: listening without TLS but ServerURL does not start with http://")
diff --git a/cli.go b/cli.go
index 90acb42..7ae6e6c 100644
--- a/cli.go
+++ b/cli.go
@@ -51,6 +51,8 @@ func (h *Headscale) RegisterMachine(key string, namespace string) error {
 	return nil
 }
 
+// ListNodeRoutes prints the subnet routes advertised by a node (identified by
+// namespace and node name)
 func (h *Headscale) ListNodeRoutes(namespace string, nodeName string) error {
 	m, err := h.GetMachine(namespace, nodeName)
 	if err != nil {
@@ -65,6 +67,8 @@ func (h *Headscale) ListNodeRoutes(namespace string, nodeName string) error {
 	return nil
 }
 
+// EnableNodeRoute enables a subnet route advertised by a node (identified by
+// namespace and node name)
 func (h *Headscale) EnableNodeRoute(namespace string, nodeName string, routeStr string) error {
 	m, err := h.GetMachine(namespace, nodeName)
 	if err != nil {
diff --git a/db.go b/db.go
index a100556..2b865b7 100644
--- a/db.go
+++ b/db.go
@@ -4,7 +4,7 @@ import (
 	"errors"
 
 	"github.com/jinzhu/gorm"
-	_ "github.com/jinzhu/gorm/dialects/postgres"
+	_ "github.com/jinzhu/gorm/dialects/postgres" // sql driver
 )
 
 const dbVersion = "1"
diff --git a/machine.go b/machine.go
index 4002377..d72e660 100644
--- a/machine.go
+++ b/machine.go
@@ -176,6 +176,7 @@ func (h *Headscale) getPeers(m Machine) (*[]*tailcfg.Node, error) {
 	return &peers, nil
 }
 
+// GetMachine finds a Machine by name and namespace and returns the Machine struct
 func (h *Headscale) GetMachine(namespace string, name string) (*Machine, error) {
 	machines, err := h.ListMachinesInNamespace(namespace)
 	if err != nil {
@@ -190,6 +191,7 @@ func (h *Headscale) GetMachine(namespace string, name string) (*Machine, error)
 	return nil, fmt.Errorf("not found")
 }
 
+// GetHostInfo returns a Hostinfo struct for the machine
 func (m *Machine) GetHostInfo() (*tailcfg.Hostinfo, error) {
 	hostinfo := tailcfg.Hostinfo{}
 	if len(m.HostInfo.RawMessage) != 0 {
diff --git a/namespaces.go b/namespaces.go
index 4c9132b..94ea288 100644
--- a/namespaces.go
+++ b/namespaces.go
@@ -91,6 +91,7 @@ func (h *Headscale) ListMachinesInNamespace(name string) (*[]Machine, error) {
 	return &machines, nil
 }
 
+// SetMachineNamespace assigns a Machine to a namespace
 func (h *Headscale) SetMachineNamespace(m *Machine, namespaceName string) error {
 	n, err := h.GetNamespace(namespaceName)
 	if err != nil {
diff --git a/preauth_keys.go b/preauth_keys.go
index 14fcdbb..50db149 100644
--- a/preauth_keys.go
+++ b/preauth_keys.go
@@ -7,6 +7,7 @@ import (
 	"time"
 )
 
+// PreAuthKey describes a pre-authorization key usable in a particular namespace
 type PreAuthKey struct {
 	ID          uint64 `gorm:"primary_key"`
 	Key         string
@@ -18,6 +19,7 @@ type PreAuthKey struct {
 	Expiration *time.Time
 }
 
+// CreatePreAuthKey creates a new PreAuthKey in a namespace, and returns it
 func (h *Headscale) CreatePreAuthKey(namespaceName string, reusable bool, expiration *time.Time) (*PreAuthKey, error) {
 	n, err := h.GetNamespace(namespaceName)
 	if err != nil {
@@ -49,6 +51,7 @@ func (h *Headscale) CreatePreAuthKey(namespaceName string, reusable bool, expira
 	return &k, nil
 }
 
+// GetPreAuthKeys returns the list of PreAuthKeys for a namespace
 func (h *Headscale) GetPreAuthKeys(namespaceName string) (*[]PreAuthKey, error) {
 	n, err := h.GetNamespace(namespaceName)
 	if err != nil {