diff --git a/content/notes/03-2d-transforms.md b/content/notes/03-2d-transforms.md
new file mode 100644
index 000000000..277b6e6fb
--- /dev/null
+++ b/content/notes/03-2d-transforms.md
@@ -0,0 +1,33 @@
+---
+title: "03-2d-transforms"
+tags: 
+- lecture
+- cosc342
+---
+
+look into how colours work together
+
+Points lines
+- point is 2d location $
+- two points define a link
+- a polyline with k segments is a sequence of k+1 points
+- a polygon is a polyline where the beginning and ened are the same, we often omit the duplicate point
+- points are vectors
+
+> [!INFO] 
+
+coordingate systems
+- mathematical
+- image based
+- matrix based
+
+
+transformations
+- translation
+- scaling
+- rotation
+- inverse
+- combinations
+
+homogenous coordinates
+homogenous transforms
diff --git a/content/notes/cosc-301.md b/content/notes/cosc-301.md
index 3f9e0825c..43bab3487 100644
--- a/content/notes/cosc-301.md
+++ b/content/notes/cosc-301.md
@@ -25,6 +25,7 @@ https://www.cs.otago.ac.nz/cosc301/schedule.php
 	- https://www.chiark.greenend.org.uk/~sgtatham/bugs.html
 	- [x] http://catb.org/~esr/faqs/smart-questions.html
 		- [[asking questions]]
+	- bash beginner guide
 # Lectures
 - [x] [[01-intro]]
 - [x] [[02-network and hardware protocols]]