diff --git a/.gitignore b/.gitignore
index ab7c8cb..f016c20 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,26 +3,41 @@ appendix-D/01_main-chapter-code/1.pdf
 appendix-D/01_main-chapter-code/2.pdf
 appendix-D/01_main-chapter-code/3.pdf
 
+appendix-E/01_main-chapter-code/loss-plot.pdf
+
 ch05/01_main-chapter-code/loss-plot.pdf
 ch05/01_main-chapter-code/temperature-plot.pdf
 ch05/01_main-chapter-code/the-verdict.txt
+
 ch06/01_main-chapter-code/loss-plot.pdf
 ch06/01_main-chapter-code/accuracy-plot.pdf
 
 # Checkpoint files
+appendix-A/01_main-chapter-code/model.pth
+appendix-E/01_main-chapter-code/gpt2
+
 ch05/01_main-chapter-code/gpt2/
 ch05/02_alternative_weight_loading/checkpoints
 ch05/01_main-chapter-code/model.pth
 ch05/01_main-chapter-code/model_and_optimizer.pth
 ch05/03_bonus_pretraining_on_gutenberg/model_checkpoints
+
 ch06/01_main-chapter-code/gpt2
 ch06/02_bonus_additional-experiments/gpt2
 ch06/03_bonus_imdb-classification/gpt2
 
 # Datasets
+appendix-E/01_main-chapter-code/sms_spam_collection.zip
+appendix-E/01_main-chapter-code/sms_spam_collection
+appendix-E/01_main-chapter-code/train.csv
+appendix-E/01_main-chapter-code/test.csv
+appendix-E/01_main-chapter-code/validation.csv
+
 ch02/01_main-chapter-code/number-data.txt
+
 ch05/03_bonus_pretraining_on_gutenberg/gutenberg
 ch05/03_bonus_pretraining_on_gutenberg/gutenberg_preprocessed
+
 ch06/01_main-chapter-code/sms_spam_collection.zip
 ch06/01_main-chapter-code/sms_spam_collection
 ch06/01_main-chapter-code/test.csv
@@ -39,6 +54,7 @@ ch06/03_bonus_imdb-classification/test.csv
 ch06/03_bonus_imdb-classification/train.csv
 ch06/03_bonus_imdb-classification/validation.csv
 
+
 # Temporary OS-related files
 .DS_Store
 
diff --git a/appendix-E/01_main-chapter-code/appendix-E.ipynb b/appendix-E/01_main-chapter-code/appendix-E.ipynb
index 7094498..01cf572 100644
--- a/appendix-E/01_main-chapter-code/appendix-E.ipynb
+++ b/appendix-E/01_main-chapter-code/appendix-E.ipynb
@@ -1390,7 +1390,7 @@
    "id": "1f87f5e6-339e-4fcf-900b-6d845d3c713d",
    "metadata": {},
    "source": [
-    "- As we can based on the relatively high accuracy values above, the LoRA finetuning was successful"
+    "- As we can see based on the relatively high accuracy values above, the LoRA finetuning was successful"
    ]
   }
  ],
diff --git a/setup/.vscode/extensions.json b/setup/.vscode/extensions.json
index daccfa3..a69b592 100644
--- a/setup/.vscode/extensions.json
+++ b/setup/.vscode/extensions.json
@@ -6,5 +6,6 @@
         "ms-vscode-remote.vscode-remote-extensionpack",
         "yahyabatulu.vscode-markdown-alert",
         "tomoki1207.pdf",
+        "mechatroner.rainbow-csv"
     ]
 }
\ No newline at end of file
diff --git a/setup/03_optional-docker-environment/.devcontainer/devcontainer.json b/setup/03_optional-docker-environment/.devcontainer/devcontainer.json
index 1627f29..dd4a150 100644
--- a/setup/03_optional-docker-environment/.devcontainer/devcontainer.json
+++ b/setup/03_optional-docker-environment/.devcontainer/devcontainer.json
@@ -12,7 +12,8 @@
         "ms-azuretools.vscode-docker",
         "ms-toolsai.jupyter",
         "yahyabatulu.vscode-markdown-alert",
-        "tomoki1207.pdf"
+        "tomoki1207.pdf",
+        "mechatroner.rainbow-csv"
       ]
     }
   }