diff --git a/.obsidian/plugins/obsidian-icon-folder/data.json b/.obsidian/plugins/obsidian-icon-folder/data.json
index c4f3118..9dab970 100644
--- a/.obsidian/plugins/obsidian-icon-folder/data.json
+++ b/.obsidian/plugins/obsidian-icon-folder/data.json
@@ -6,11 +6,11 @@
     "emojiStyle": "native",
     "iconColor": null,
     "recentlyUsedIcons": [
+      "🖥",
+      "LiComputer",
       "LiSatellite",
       "LiBookOpenCheck",
-      "📖",
-      "📊",
-      "LiCodeSquare"
+      "📖"
     ],
     "recentlyUsedIconsSize": 5,
     "rules": [],
@@ -84,5 +84,10 @@
     "iconName": "LiBookOpenCheck",
     "iconColor": "#ffbb00"
   },
-  "Extracurricular/satQuest": "LiSatellite"
+  "Extracurricular/satQuest": "LiSatellite",
+  "Software Engineering": {
+    "iconName": "LiComputer",
+    "iconColor": "#3df2ff"
+  },
+  "Operating Systems": "🖥"
 }
\ No newline at end of file
diff --git a/.obsidian/workspace.json b/.obsidian/workspace.json
index 27c45f5..325e0f2 100644
--- a/.obsidian/workspace.json
+++ b/.obsidian/workspace.json
@@ -27,12 +27,12 @@
             "state": {
               "type": "markdown",
               "state": {
-                "file": "Statistics and Probability/Support Lecture.md",
+                "file": "Software Engineering/Introductory Lecture.md",
                 "mode": "source",
                 "source": false
               },
               "icon": "lucide-file",
-              "title": "Support Lecture"
+              "title": "Introductory Lecture"
             }
           }
         ],
@@ -92,8 +92,7 @@
       }
     ],
     "direction": "horizontal",
-    "width": 234.5,
-    "collapsed": true
+    "width": 234.5
   },
   "right": {
     "id": "fd4347e6b5300816",
@@ -214,11 +213,14 @@
       "omnisearch:Omnisearch": false
     }
   },
-  "active": "3dbe2cc922c4bee2",
+  "active": "56bef0584922cba9",
   "lastOpenFiles": [
+    "Operating Systems",
+    "Statistics and Probability/Support Lecture.md",
+    "Software Engineering/Introductory Lecture.md",
+    "Software Engineering",
     "Pasted image 20250113151159.png",
     "Extracurricular/Misc/Ideas.md",
-    "Statistics and Probability/Support Lecture.md",
     "Functional Programming/Drawing 2024-12-24 17.52.22.excalidraw.md",
     "Extracurricular/satQuest/Meeting Dec 18.md",
     "Extracurricular/satQuest/img/Pasted image 20241218122110.png",
@@ -251,18 +253,15 @@
     "Linear Algebra/Matrices.md",
     "Advanced Programming/Intro.md",
     "Advanced Programming/Annotation Repository.md",
-    "Advanced Programming/projects/API Design Research.md",
     "Advanced Algorithms/assets/pnp/Pasted image 20241203234013.png",
     "Advanced Algorithms/assets/pnp/Pasted image 20241203234032.png",
     "Advanced Algorithms/assets/graph/1_WR4AtjT_nhwSOtAW99Yd5g.gif",
-    "Advanced Algorithms/assets/pnp/Pasted image 20241203233926.png",
     "Advanced Algorithms/assets/pnp",
     "Advanced Algorithms/assets/graph",
     "Advanced Algorithms/practicals",
     "Statistics and Probability/R",
     "Discrete Structures/img",
     "Algorithmic Programming Contests",
-    "Functional Programming/assets",
     "Web Engineering/canvae/server_client.canvas",
     "Advanced Programming/projects/second/Refactoring.canvas",
     "Advanced Programming/assets/assignment/assignment_organization.canvas",
diff --git a/Software Engineering/Introductory Lecture.md b/Software Engineering/Introductory Lecture.md
new file mode 100644
index 0000000..e69de29