diff --git a/README.md b/README.md
index a8f3d10..3e602aa 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,14 @@
 # glacier-usrpkgs
 User packages collection for Glacier
+
+User packages should contain the following:
+
+- License
+- Package source tree
+- usrbuild.sh
+- usrupdate.sh
+- usrremove.sh
+- pkgname.ts.sh (containing the same 2 lines as a regular Glacier package)
+- pkgname-pkginfo.json (1 extra line reading `"is-usrpkg:" "yes",`)
+
+A user package should create all the same files that a regular Glacier package would