diff --git a/book/book.toml b/book/book.toml
index cf3fcec..b10f85e 100644
--- a/book/book.toml
+++ b/book/book.toml
@@ -29,8 +29,13 @@ smart-punctuation = true
 no-section-label = false
 git-repository-url = 'github.com/clpi/word.lua'
 edit-url-template = "https://github.com/clpi/word.lua/edit/master/book/{path}"
+git-repository-icon = "fa-github"
 input-404 = "404.md"
 
+[output.linkcheck]
+
+[preprocessor.pagetoc]
+
 [output.html.search]
 enable = true
 expand = true
diff --git a/book/book.css b/book/js/index.js
similarity index 100%
rename from book/book.css
rename to book/js/index.js
diff --git a/book/src/SUMMARY.md b/book/src/SUMMARY.md
index 0298ca4..54cfe51 100644
--- a/book/src/SUMMARY.md
+++ b/book/src/SUMMARY.md
@@ -44,6 +44,11 @@ As for some basic info about `word.lua`:
 
 ---
 
-7. [Final thoughts](./final_thoughts.md)
-8. [Roadmap](./roadmap.md)
-9. [Credits](./credits.md)
+7. [Support](./support.md)
+  1. [Issues](./contributing/issues.md)
+  2. [Contributing](./contributing/discussions.md)
+  3. [Sponsorship](./contributing/sponsorship.md)
+2. [Contributing](./contributing/intro.md)
+1. [Final thoughts](./final_thoughts.md)
+3. [Roadmap](./roadmap.md)
+4. [Credits](./credits.md)
diff --git a/book/book.js b/book/style/book.css
similarity index 100%
rename from book/book.js
rename to book/style/book.css
diff --git a/book/style/toc.css b/book/style/toc.css
new file mode 100644
index 0000000..e69de29