Add a Tips section to README

This bit someone, who was having difficulty with a CVS import, without
knowing there was a git repository on savannah.

1 files changed, 15 insertions, 0 deletions

diff --git a/README b/README
index a1355a4..0241532 100644
--- a/README
+++ b/README
@@ -197,6 +197,21 @@ NOTE: tarball imports are unlikely to give the same commit SHA1 but the tree
 SHA1 inside (which is what is used for artifact cache IDs) should remain
 stable.
 
+Tips
+----
+
+1.  Use upstream's git repository whenever possible
+
+    Importing from foreign version control systems is always slower than a
+    git mirror (with the exception of tarballs because they have less history).
+
+2.  GNU Projects often have a git repository
+
+    Most GNU projects are old compared to git, so were mainly developed in CVS.
+    Many official websites only mention the CVS or SVN repositories.
+    They will tend to have a git repository as well though, especially if they
+    are hosted on savannah.
+
 Legal stuff
 -----------