Update some of the instructor notes

instructors/instructor-notes.md

@@ -25,14 +25,14 @@ open software repository landscape, so the time and effort required to teach
 fundamental Git is justified and worthwhile.
 
 Because of this complexity, we don't teach novice learners about many
-interesting topics, such as branching, hashes, and commit objects.
+interesting topics, such as hashes, and commit objects.
 
-Instead we try to convince them that version control is useful for researchers
+Instead we try to convince them that version control is useful for
 working in teams or not, because it is
 
 - a better way to "undo" changes,
 - a better way to collaborate than mailing files back and forth, and
-- a better way to share your code and other scientific work with the world.
+- a better way to share your code and other work with the world.
 
 ## Teaching Notes
 
@@ -98,8 +98,20 @@ working in teams or not, because it is
   and, "come on this really has to be the last version" to motivate version
   control as a better way to collaborate and as a better way to back work up.
 
+### Met Office
+
+Why are we moving to Git and GitHub?
+
+- FCM/SVN becoming unmaintainable
+- Git/GitHub provide better security (MFA)
+- GitHub has more useful features for collaboration than trac
+- Easier to collaborate with partners outside the Met Office with GitHub
+
 ## [Setting Up Git](../episodes/02-setup.md)
 
+Do **NOT** skip any steps setting the config.
+This may cause problems later especially if students end up with master branches.
+
 - We suggest instructors and students use `nano` as the text editor for this
   lessons because
 
@@ -140,6 +152,13 @@ working in teams or not, because it is
   The challenge suggests that it is a bad idea to create a Git repo inside another repo.
   For more discussion on this topic, please see [this issue][repos-in-repos].
 
+## [Branches](../episodes/09-branches.md)
+
+All Mermaid diagrams don't render atm in the Extract all Images page
+so be wary of this.
+Avoid putting your own preference into the training and teach
+`git switch` (although the other options are also given for reference).
+
 ## [Tracking Changes](../episodes/04-changes.md)
 
 - It's important that learners do a full commit cycle by themselves (make
@@ -183,6 +202,8 @@ particular set of files in `.gitignore`.
 
 ## [Collaborating](../episodes/08-collab.md)
 
+NOT IN THE MET OFFICE VERSION
+
 - Decide in advance whether all the learners will work in one shared
   repository, or whether they will work in pairs (or other small groups) in
   separate repositories.  The former is easier to set up; the latter runs
@@ -249,6 +270,8 @@ particular set of files in `.gitignore`.
 
 ## [Conflicts](../episodes/09-conflict.md)
 
+NOT IN THE MET OFFICE VERSION
+
 - Expect the learners to make mistakes. Expect *yourself* to make mistakes.
   This happens because it is late in the lesson and everyone is tired.