diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..4914efc
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "Lectures/Presentations"]
+	path = Lectures/Presentations
+	url = git@github.com:MPSU/APS-lect-presentations.git
diff --git a/Lectures/Presentations b/Lectures/Presentations
new file mode 160000
index 0000000..2636b24
--- /dev/null
+++ b/Lectures/Presentations
@@ -0,0 +1 @@
+Subproject commit 2636b2496fb3e44ad310ae1ce67272224764da20