diff --git a/.obsidian/workspace.json b/.obsidian/workspace.json
index cbe7b94..0c5c7ef 100644
--- a/.obsidian/workspace.json
+++ b/.obsidian/workspace.json
@@ -228,7 +228,8 @@
       }
     ],
     "direction": "horizontal",
-    "width": 482
+    "width": 482,
+    "collapsed": true
   },
   "left-ribbon": {
     "hiddenItems": {
@@ -250,8 +251,9 @@
       "3d-graph-new:Global 3D Graph": false
     }
   },
-  "active": "1ef10fc51fc1f1e1",
+  "active": "b338ee701498f876",
   "lastOpenFiles": [
+    "00 Inbox/00_базовые_понятия.pdf",
     "90 Library/Programming/Web/Основы, селекторы и блочная модель.md",
     "90 Library/Programming/Web/Адаптивность, Flexbox и Grid.md",
     "90 Library/Programming/Python/Работа с формами и CUD.md",
@@ -277,7 +279,6 @@
     "04 Tools/SocialBase/04 Другие/Владислав Алёхин.sync-conflict-20260603-110335-23DMR5O.md",
     "04 Tools/SocialBase/04 Другие/Александр Генсур.sync-conflict-20260603-110335-23DMR5O.md",
     "90 Library/Other/Гайд на научников.sync-conflict-20260603-110310-23DMR5O.md",
-    "04 Tools/SocialBase/04 Другие/Георгий Божко.sync-conflict-20260603-110335-23DMR5O.md",
     "04 Tools/StudyTracker/Courses",
     "04 Tools/StudyTracker/Books",
     "04 Tools/SocialBase/04 Другие",
diff --git a/00 Inbox/00_базовые_понятия.pdf b/00 Inbox/00_базовые_понятия.pdf
new file mode 100644
index 0000000..d167967
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