diff --git a/README.md b/README.md
index 86e8fdb..7d92c20 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,23 @@
-# TWRP tree for gts210velte
+## TWRP device tree for Samsung Galaxy Tab S2 9.7 LTE (gts210velte)
+## gts210velte
 
-Kernel source:
-https://github.com/LineageOS/android_kernel_samsung_msm8976/tree/4664546f2b58d616ae66c109dea862cf928fb5d4
+Add to `.repo/local_manifests/gts210velte.xml`:
+
+```xml
+<?xml version="1.0" encoding="UTF-8"?>
+<manifest>
+  <project name="ripee/android_device_samsung_gts210velte" path="device/samsung/gts210velte" remote="github" revision="android-7.1" />
+</manifest>
+```
+
+Then run `repo sync` to check it out.
+
+To build:
+
+```sh
+. build/envsetup.sh
+lunch omni_gts210velte-eng
+mka recoveryimage
+```
+
+Kernel source: https://github.com/LineageOS/android_kernel_samsung_msm8976/tree/4664546f2b58d616ae66c109dea862cf928fb5d4