diff --git a/.gitignore b/.gitignore
new file mode 100644
index 000000000..9aa6a64e3
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+output.log
diff --git a/README.md b/README.md
index 9e7d03700..3ff39bab2 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,4 @@
 # git-practice
+
 このリポジトリはGit動画講座用です．
+自分のローカルリポジトリで変更
diff --git a/delete_soon.txt b/delete_soon.txt
new file mode 100644
index 000000000..e69de29bb
diff --git a/namechanged2.txt b/namechanged2.txt
new file mode 100644
index 000000000..8e8eb40ed
--- /dev/null
+++ b/namechanged2.txt
@@ -0,0 +1 @@
+A new file created by hy.
diff --git a/newfile.txt b/newfile.txt
new file mode 100644
index 000000000..84e376f40
--- /dev/null
+++ b/newfile.txt
@@ -0,0 +1 @@
+created a new file at main branch