diff --git a/mechanical_keyboard_science/Makefile b/mechanical_keyboard_science/Makefile
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+++ b/mechanical_keyboard_science/Makefile
@@ -0,0 +1,9 @@
+pdf:
+	marp --pdf --pdf-notes .
+
+present:
+	marp -w -s --bespoke.progress .
+
+notes:
+	marp --notes .
+
diff --git a/mechanical_keyboard_science/README.md b/mechanical_keyboard_science/README.md
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@@ -0,0 +1,16 @@
+# Mechanical Keyboard Science
+
+I'm using [Marp](https://marp.app/) for the slides.
+
+Run slides with:
+
+```shell
+make present
+```
+
+Generate PDF with:
+
+```shell
+make pdf
+```
+
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diff --git a/mechanical_keyboard_science/index.md b/mechanical_keyboard_science/index.md
index bc82b71..04d15a9 100644
--- a/mechanical_keyboard_science/index.md
+++ b/mechanical_keyboard_science/index.md
@@ -4,7 +4,7 @@
 
 # Mechanical Keyboards
 
-## aka how to waste more money fast 🕳️💵
+## aka how to waste money fast 🕳️💵
 
 ---
 
@@ -16,13 +16,14 @@
 - 🎚️ Stabilizers
 - 🧠 PCBs
 - 🧱 Cases
-- 💦 Lube
-- 🔉 Foam
+- ✨ Mods
 
 ---
 
 # 🔍 Sizes
 
+## Percentage of a full size keyboard
+
 ---
 
 # 100% - Fullsize
@@ -39,19 +40,136 @@
 
 ---
 
-# 🎛️S Switche
-
-## 🔊 Loud
-
-- Cherry Blue, Green
-
-## 🔉 Normal
-
-- Cherry Brown
-
-## 🔈 Quiet
-
-- Cherry Red, Black, Silence
+# 65%
 
 ---
 
+# 40% - Planck
+
+---
+
+# Ergonomic
+
+---
+
+# 🔳 Keycaps
+
+- uniform vs sculpted
+
+## Cherry, OEM
+
+- "the normal ones"
+
+## SA, MDA
+
+- tall, old school looking
+
+## XDA, DSA
+
+- one size fits all
+- good for custom layouts
+
+## Articans
+
+- it's art
+
+---
+
+# 🎛️ Switches
+
+## General facts
+
+- Cherry “Mechanical X-Point” technology (MX) from early 1980s
+- Gateron, Kailh, Razer, etc build compatible alternatives
+
+**insert colorful picture of switches here**
+
+---
+
+# 🎛️ Switches
+
+## Sizes
+
+### Normal
+
+- Cherry MX compatible
+- Alps
+
+### Low profile
+
+- Cherry MX Low Profile
+- Kailh Low Profile Choc v1
+- Kailh Low Profile Choc v2
+
+---
+
+# 🎛️ Switches
+
+## Types
+
+### Tactile
+
+- Bump when pressing down
+
+### Linear
+
+- No bump
+- Speed variants with less pre-travel
+
+### Clicky
+
+- Tactile bump
+- Audible click
+
+---
+
+# 🎛️ Switches
+
+- Mounting: 5 Pin vs 3 Pin
+- Materials:
+  - Polycarbonate (PC) - usually top housing
+  - Nylon (PA66) - usially bottom housing
+  - Polyoxymethylene (POM) - usually stem
+    - Self lubricating
+- Actuation Force in grams
+  - Bottom out
+- Spring size in mm
+- Travel distance in mm
+  - Total and pre travel before actuation
+
+---
+
+# 🎚️ Stabilizers
+
+---
+
+# ✨ Mods
+
+## Golden Toslink cables ahead! 😜
+
+---
+
+# ✨ Mods
+
+## 💦 Lube
+
+---
+
+# ✨ Mods
+
+## 🔉 Foam
+
+---
+
+# ✨ Mods
+
+## Stickers
+
+---
+
+# ✨ Mods
+
+## Films
+
+
+