diff --git a/README.md b/README.md
index 021e518..d5cf3e4 100644
--- a/README.md
+++ b/README.md
@@ -18,3 +18,15 @@ Use only terminal commands for git (you can use VS Code for editing!) :^)
 - [Req](./req.md)
 
 Good luck, have fun!
+
+## Branch
+
+A branch in Git is a separate line of development that allows you to work on features or fixes without affecting the main codebase until you're ready to merge your changes.
+
+## Pull request
+
+A pull request in Git is a request to merge changes from one branch (or fork) into another, often used for collaboration and code review.
+
+## Fork in GitHub
+
+A fork in GitHub is a personal copy of someone else's repository that allows you to freely experiment with changes without affecting the original project.
diff --git a/olgaDCI.md b/olgaDCI.md
new file mode 100644
index 0000000..a9f7e2b
--- /dev/null
+++ b/olgaDCI.md
@@ -0,0 +1,11 @@
+## Branch
+
+A branch in Git is a separate line of development that allows you to work on features or fixes without affecting the main codebase until you're ready to merge your changes.
+
+## Pull request
+
+A pull request in Git is a request to merge changes from one branch (or fork) into another, often used for collaboration and code review.
+
+## Fork in GitHub
+
+A fork in GitHub is a personal copy of someone else's repository that allows you to freely experiment with changes without affecting the original project.
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