diff --git a/kubernetes_101/replicaset.drawio.svg b/kubernetes_101/deployment.drawio.svg
similarity index 100%
rename from kubernetes_101/replicaset.drawio.svg
rename to kubernetes_101/deployment.drawio.svg
diff --git a/kubernetes_101/index.md b/kubernetes_101/index.md
index 9091624..bed282c 100644
--- a/kubernetes_101/index.md
+++ b/kubernetes_101/index.md
@@ -43,7 +43,7 @@ keywords: kubernetes,container,basics
 - 🛋️ Environment
 - 📦 Containers
 - 🏡 Pods
-- 🏘️ ReplicaSets
+- 🏭 Deployments
 - 🏪 Services
 - 💾 Volumes
 - 🌆 Namespaces
@@ -57,7 +57,8 @@ The emojis probably make no sense, ignore them if they confuse you.
 
 # Agenda part 2 - Advanced topics
 
-- 🏭 Deployments
+- 🏷️ Labels and 🔖 Taints
+- 🏘️ ReplicaSets
 - 🧰 DaemonSet
 - 🗃️ StatefulSets
 - 🌐 Ingress Controller
@@ -65,7 +66,6 @@ The emojis probably make no sense, ignore them if they confuse you.
 - 💾 Container Storage Interface (CSI)
 - 🕸️  Container Network Interface (CNI)
   - 👮 Network Policies
-- 🃏 Custom Resources
 
 <!-- It's ok if you zone out somewhere around here. -->
 
@@ -114,9 +114,18 @@ Example: Simple PHP app
 
 ---
 
-![bg right 80%](./replicaset.drawio.svg)
+![bg right 80%](./deployment.drawio.svg)
 
-# 🏘️ ReplicaSets
+# 🏭 Deployment
+
+- Manages:
+  - Pods
+  - Volumes
+  - Secrets
+- Types:
+  - ReplicaSets
+  - DaemonSets
+  - StatefulSets
 
 ---
 
@@ -136,6 +145,9 @@ Example: Simple PHP app
 
 # 🌆 Namepaces
 
+- Isolates group of resources
+- Names need to be unique
+
 ---
 
 # You survived, take a cookie!
@@ -150,24 +162,60 @@ Let's deploy a simple web app with a volume.
 
 ---
 
-# 🏭 Deployments
+# 🏷️ Labels and 🔖 Taints
+
+---
+
+# 🏘️ ReplicaSets
+
+- Maintain a stable set of replica Pods
+- Pods are identical
+- Good for scaling
+- Finds Pods by their label 🏷️
 
 ---
 
 # 🧰 DaemonSets
 
+- Pods are started on every node of the cluster
+- Useful for cluster wide services
+
 ---
 
 # 🗃️ StatefulSets
 
+- Fine control over storage
+- Pods are started in order
+- Pods have stable identities
+  - redis-1, redis-2, redis-3, ...
+- Useful for clustered services
+  - E.g. primary pod needs to start first
+
 ---
 
 # 🌐 Ingress Controller
 
+- Load balancer
+- Can be NGINX, HAProxy
+- Different in Cloud kubernetes
+- Handles HTTP(S) traffic to the cluster
+- Kubernetes object: `Ingress`
+- OpenShift object: `Route`
+
 ---
 
 # 📑 Cluster DNS
 
+- Pods: `<pod-ip-address>.<namespace-name>.pod.cluster.local`
+- Services: `<service-name>.<namespace-name>.svc.cluster.local`
+- Pods behind Services: `<pod-ip-address>.<service-name>.<namespace-name>.svc.cluster.local`
+- /etc/resolv.conf:
+  ```
+  nameserver 2001:cafe:42:1::23
+  search <namespace>.svc.cluster.local svc.cluster.local cluster.local
+  options ndots:5
+  ```
+
 ---
 
 # 💾 Container Storage Interface (CSI)
@@ -180,10 +228,6 @@ Let's deploy a simple web app with a volume.
 
 ---
 
-# 🃏 Custom Resource
-
----
-
 # Kubernetes distribution
 
 - 💻 On bare metal
@@ -206,6 +250,7 @@ Let's deploy a simple web app with a volume.
 
 # Still not enough?
 
+- 🃏 Custom Resources
 - 🔑 Secrets
 - 📡 Control Plane
 - 🔩 Operators
diff --git a/mechanical_keyboard_science/index.md b/mechanical_keyboard_science/index.md
new file mode 100644
index 0000000..bc82b71
--- /dev/null
+++ b/mechanical_keyboard_science/index.md
@@ -0,0 +1,57 @@
+---
+
+---
+
+# Mechanical Keyboards
+
+## aka how to waste more money fast 🕳️💵
+
+---
+
+# Agenda
+
+- 🔍 Sizes
+- 🔳 Keycaps
+- 🎛️ Switches
+- 🎚️ Stabilizers
+- 🧠 PCBs
+- 🧱 Cases
+- 💦 Lube
+- 🔉 Foam
+
+---
+
+# 🔍 Sizes
+
+---
+
+# 100% - Fullsize
+
+![bg 100% left](./100percent_a.png)
+![bg 100% right](./100percent_b.png)
+
+---
+
+# 75%
+
+![bg 100% left](./75percent_a.png)
+![bg 100% right](./75percent_b.png)
+
+---
+
+# 🎛️S Switche
+
+## 🔊 Loud
+
+- Cherry Blue, Green
+
+## 🔉 Normal
+
+- Cherry Brown
+
+## 🔈 Quiet
+
+- Cherry Red, Black, Silence
+
+---
+