diff --git a/README.md b/README.md
index 655b7ba..052329c 100644
--- a/README.md
+++ b/README.md
@@ -99,6 +99,7 @@ We'll share more information (sample codes, guides,  etc.) soon.
 * **[F.A.Q.](https://github.com/lightaprs/LightTracker-1.0/wiki/F.A.Q.)**
 * **[Antenna Guide](https://github.com/lightaprs/LightTracker-1.0/wiki/Antenna-Guide)**
 * **[Tips & Tricks for Pico Balloons](https://github.com/lightaprs/LightTracker-1.0/wiki/Tips-&-Tricks-for-Pico-Balloons)**
+* **[Supported Protocols and Digital Modes](https://github.com/lightaprs/LightTracker-1.0/wiki/Supported-Protocols-and-Digital-Modes)**
 
 ### LoRaWAN
 
diff --git a/lora-asset-tracker-rx/README.md b/lora-asset-tracker-rx/README.md
new file mode 100644
index 0000000..58d2b47
--- /dev/null
+++ b/lora-asset-tracker-rx/README.md
@@ -0,0 +1,3 @@
+Before uploading "lora-asset-tracker-**rx**.ino" sketch file to your device, you should check following guide:
+
+**[LoRa Asset Tracker RX Guide](https://github.com/lightaprs/LightTracker-1.0/wiki/LoRa-Asset-Tracker-RX-Guide)**
diff --git a/lora-asset-tracker-tx/README.md b/lora-asset-tracker-tx/README.md
new file mode 100644
index 0000000..9a53bfa
--- /dev/null
+++ b/lora-asset-tracker-tx/README.md
@@ -0,0 +1,3 @@
+Before uploading "lora-asset-tracker-**tx**.ino" sketch file to your device, you should check following guide:
+
+**[LoRa Asset Tracker TX Guide](https://github.com/lightaprs/LightTracker-1.0/wiki/LoRa-Asset-Tracker-TX-Guide)**
diff --git a/lorawan-otaa-asset-tracker/README.md b/lorawan-otaa-asset-tracker/README.md
new file mode 100644
index 0000000..4c12f47
--- /dev/null
+++ b/lorawan-otaa-asset-tracker/README.md
@@ -0,0 +1,3 @@
+Before uploading "lorawan-otaa-asset-tracker.ino" sketch file to your device, you should check following guide:
+
+**[LoRaWAN OTAA Asset Tracker Guide](https://github.com/lightaprs/LightTracker-1.0/wiki/LoRaWAN-OTAA-Asset-Tracker-Guide)**