Organize into before/during/after sections

This should make it easier to flesh out the page a little in
followup changes.

Change-Id: Ied6c0621d1ffa779953da36ecb00115b3308b9af
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
diff --git a/index.md b/index.md
index fe76915..c666fd7 100644
--- a/index.md
+++ b/index.md
@@ -20,29 +20,22 @@
 Plans for a 2021 follow-up event for a broader set of Git end users
 will be discussed during the summit.
 
-Git Inclusion Summit is:
-- Monday, September 14th: one half day of training, moving from
-  recognizing marginalization to actively planning the minimizing of
-  marginalization where it manifests in the Git upstream project and
-  in the Git tool.
-- Tuesday, September 15th: Unconference-style breakout sessions, to
-  discuss specific aspects of inclusion and plans to get there.
-
-## Registration
-
-Prior
-[registration](https://lore.kernel.org/git/CA+Twho+nyERK1Ljdy6MnXA=iK6SiU85v4yLQc+fRmW83JVa+hQ@mail.gmail.com/)
-required.
-
 ## Code of Conduct
 
 The Git project's [Code of
 Conduct](https://kernel.googlesource.com/pub/scm/git/git/+/master/CODE_OF_CONDUCT.md)
 applies.
 
-## Resources
+## Before the Summit
 
-### Pre-summit
+### Registration
+
+Access to the summit is free; anyone interested is encouraged to
+register.
+[Registration](https://lore.kernel.org/git/CA+Twho+nyERK1Ljdy6MnXA=iK6SiU85v4yLQc+fRmW83JVa+hQ@mail.gmail.com/)
+is required for attendance.
+
+### Reading
 
 We're providing pre-reading material on a range of topics. This list
 will grow over time --- check back soon.
@@ -53,7 +46,16 @@
 - ZDNet's Alison DeNisco-Rayome on [Transgender employees in
   tech](https://www.zdnet.com/article/transgender-employees-in-tech-why-this-progressive-industry-has-more-work-to-do-to-achieve-true-gender-inclusivity/)
 
-### Post-summit
+## During the Summit
+
+- Monday, September 14th: one half day of training, moving from
+  recognizing marginalization to actively planning the minimizing of
+  marginalization where it manifests in the Git upstream project and
+  in the Git tool.
+- Tuesday, September 15th: Unconference-style breakout sessions, to
+  discuss specific aspects of inclusion and plans to get there.
+
+## After the Summit
 
 Bookmark this page to check back for a recap on the initial September
 event.