diff --git a/.gitignore b/.gitignore
index 6f72f89..a743d27 100644
--- a/.gitignore
+++ b/.gitignore
@@ -23,3 +23,5 @@ go.work.sum
 
 # env file
 .env
+
+/.idea
\ No newline at end of file
diff --git a/README.md b/README.md
index 1543d7a..ab9f913 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,16 @@
 # SUD
 SUDOKU FILETYPE
+
+## Structure
+### HEADER
+- [ ] Data length
+- [ ] HASH
+- [ ] SUD Version
+- [ ] Options
+
+### BODY
+- [ ] Title
+- [ ] Author
+- [ ] Rules (Optional)
+- [ ] Field
+- [ ] Legend
\ No newline at end of file