diff --git a/.github/workflows/csharp.yaml b/.github/workflows/csharp.yaml
new file mode 100644
index 0000000..4a0178c
--- /dev/null
+++ b/.github/workflows/csharp.yaml
@@ -0,0 +1,19 @@
+name: csharp
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Clone Repository
+        uses: actions/checkout@v4
+
+      - name: Spell Check
+        uses: rojopolis/spellcheck-github-actions@0.45.0
+        with:
+          output_file: spellcheck-output.txt
diff --git a/README.md b/README.md
index 6876a7c..91d2e4d 100755
--- a/README.md
+++ b/README.md
@@ -1,4 +1,5 @@
 # C#
+![build status](https://github.com/praisetompane/csharp/actions/workflows/csharp.yaml/badge.svg) <br>
 
 ## Objectives
 - Notes: The C# Programming Language
diff --git a/todo.txt b/todo.txt
new file mode 100644
index 0000000..f826dfa
--- /dev/null
+++ b/todo.txt
@@ -0,0 +1,50 @@
+- ecosystem/data
+    - database/efcore
+
+- ecosystem/web_and_internet_development:
+    - asp.net_core
+
+- language
+    - https://www.freecodecamp.org/learn/foundational-c-sharp-with-microsoft/
+    - History
+    - C# Language Highlights: https://www.youtube.com/playlist?list=PLdo4fOcmZ0oU3ZLx6Ul1_HPrr6lFPIn9O
+
+- ecosystem/testing:
+    - nunit
+
+- ecosystem/ecosystem/dev_environment
+
+- ecosystem/ecosystem/infrastructure
+
+- ecosystem/ecosystem/ci_cd
+
+- canonical/idiomatic C# and .NET
+
+- ecosystem/ecosystem/monitoring
+
+- study reference implementations from the .NET team:
+    - web:
+        - shop:
+            - https://github.com/dotnet/eshop
+            - .NET 8 version: https://github.com/dotnet/eShop/tree/release/8.0
+
+        - eShopSupport:
+            - https://github.com/dotnet/eshopsupport
+
+- .NET: https://www.youtube.com/playlist?list=PLdo4fOcmZ0oVlZCosDDwS9fkVtrLYxGt6
+
+- microservices: https://www.youtube.com/playlist?list=PLdo4fOcmZ0oUc2ShrReCS7KoBbPEONE0p
+
+- security: https://www.youtube.com/playlist?list=PLdo4fOcmZ0oVIWiDzzwzOo8-Om_ew-Fi-
+
+- .NET Conf 2024
+
+- .NET Conf 2025
+
+- study current implementations at Allan Gray:
+    -
+
+- .NET aspire:
+    - https://learn.microsoft.com/en-us/credentials/applied-skills/build-distributed-apps-with-dotnet-aspire/
+
+- ecosystem/ecosystem/cloud
\ No newline at end of file