diff --git a/README.md b/README.md
index bea146cb..cda18ff4 100644
--- a/README.md
+++ b/README.md
@@ -20,6 +20,12 @@ In theory, all hardware from the [Board Support Packages](https://github.com/esp
 In practice, there are pre-configured drivers available for these boards:
 - Yellow Board / 2432S024
 
+# Guide
+
+Until there is proper documentation, here are some pointers:
+- [Sample application](./main/main.c)
+- [NanoBake](./components/nanobake/)
+
 ## License
 
 [GNU General Public License Version 3](LICENSE.md)
diff --git a/main/main.c b/main/main.c
index 267e4a2c..87183856 100644
--- a/main/main.c
+++ b/main/main.c
@@ -10,27 +10,27 @@
 
 static const char *TAG = "main";
 
-static void app_button_cb(lv_event_t* e) {
+static void prv_button_callback(lv_event_t* event) {
     ESP_LOGI(TAG, "tap");
 }
 
-static void app_main_lvgl(nb_platform_t* platform) {
-    lv_obj_t *scr = lv_scr_act();
+static void prv_main_vgl(nb_platform_t* platform) {
+    lv_obj_t* scr = lv_scr_act();
 
     lvgl_port_lock(0);
 
-    lv_obj_t *label = lv_label_create(scr);
+    lv_obj_t* label = lv_label_create(scr);
     lv_label_set_recolor(label, true);
-    lv_obj_set_width(label, 240);
+    lv_obj_set_width(label, (lv_coord_t)platform->display.horizontal_resolution);
     lv_obj_set_style_text_align(label, LV_TEXT_ALIGN_CENTER, 0);
     lv_label_set_text(label, "Hello, world!");
     lv_obj_align(label, LV_ALIGN_CENTER, 0, -30);
 
-    lv_obj_t *btn = lv_btn_create(scr);
+    lv_obj_t* btn = lv_btn_create(scr);
     label = lv_label_create(btn);
     lv_label_set_text_static(label, "Button");
-    lv_obj_align(btn, LV_ALIGN_BOTTOM_MID, 0, -30);
-    lv_obj_add_event_cb(btn, app_button_cb, LV_EVENT_CLICKED, NULL);
+    lv_obj_align(btn, LV_ALIGN_CENTER, 0, 30);
+    lv_obj_add_event_cb(btn, prv_button_callback, LV_EVENT_CLICKED, NULL);
 
     lvgl_port_unlock();
 }
@@ -44,5 +44,5 @@ void app_main(void) {
     static nb_platform_t platform;
     ESP_ERROR_CHECK(nb_platform_create(platform_config, &platform));
 
-    app_main_lvgl(&platform);
+    prv_main_vgl(&platform);
 }