chore: add some notes

Author: gladiuscode

README.md

@@ -1,2 +1,35 @@
 # github-actions-playground
 This repository is used as a playground to learn and mess with github actions.
+
+## Notes
+
+A basic workflow is configured as follows:
+
+```yaml
+
+name: CI
+
+on: [push]
+
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: SayHi
+        run: echo "Hello, ${{ github.actor }}"
+
+```
+
+Each job runs in a fresh instance of the virtual environment, this means that we need to checkout the branch and install
+the dependencies in each job;
+
+Continuos Integration (CI): is the practice of automating the integration of code changes from multiple contributors 
+into a single software project. The CI process is comprised of automatic tools that assert the new code’s correctness 
+before integration. This means that you can set up github actions to run tests, linters, etc. on each push to the
+repository or on a pull request.
+
+Continuous Deployment (CD): is the practice of automating the deployment of code changes to a production environment.
+This means that you can set up github actions to deploy your code to a server, a cloud provider, etc. once you are 
+ready to release a new version of your software.