diff --git a/.DS_Store b/.DS_Store
new file mode 100644
index 0000000..fa3d1a8
Binary files /dev/null and b/.DS_Store differ
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..5b6a065
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,4 @@
+.Rproj.user
+.Rhistory
+.RData
+.Ruserdata
diff --git a/Intro.Rproj b/Intro.Rproj
new file mode 100644
index 0000000..8e3c2eb
--- /dev/null
+++ b/Intro.Rproj
@@ -0,0 +1,13 @@
+Version: 1.0
+
+RestoreWorkspace: Default
+SaveWorkspace: Default
+AlwaysSaveHistory: Default
+
+EnableCodeIndexing: Yes
+UseSpacesForTab: Yes
+NumSpacesForTab: 2
+Encoding: UTF-8
+
+RnwWeave: Sweave
+LaTeX: pdfLaTeX
diff --git a/code/01-Structures.R b/code/01-Structures.R
index 7337f9e..2c1b1e4 100644
--- a/code/01-Structures.R
+++ b/code/01-Structures.R
@@ -1,10 +1,10 @@
 ## 01-Structures.R
-# Code from 01-structures
+# Code from 01-structure
 
-5 + 5
+5sdf + 5sdfsdfopisdfupoiu
 4 - 1
-1 * 2
-4 ^ 2
+1 * 2dgdsfgdfgfd
+4 ^ 2fdgdfgdfgdfgdfg
 
 a <- 1
 b <- 2
diff --git a/data/.DS_Store b/data/.DS_Store
new file mode 100644
index 0000000..5008ddf
Binary files /dev/null and b/data/.DS_Store differ