diff --git a/README.md b/README.md
index d2d1272..ce771fc 100644
--- a/README.md
+++ b/README.md
@@ -3,3 +3,21 @@
 I stole the makefile from some random tutorial.
 
 Let's do folders for each lab once we get around to it.
+
+## Dependancies
+
+AVR-gcc and stuff like that
+
+```
+sudo apt install -y gcc-avr avrdude avr-libc make cmake
+```
+
+## CMAKE instructions ##
+
+You have to specify a custom toolchain when you run cmake for the first time. Example:
+
+```
+mkdir build && cd build
+cmake -DCMAKE_TOOLCHAIN_FILE=../generic-gcc-avr.cmake ../
+make
+```