Add bookkeeping with GnuCash to main listing page

index.md

@@ -61,6 +61,7 @@ tools/upgrading-drutopia-platform-elizabeth-sites
 tools/uptime-monitoring
 tools/inspecting-logs
 templates/drupal-module-project
+tools/bookkeeping-with-gnucash
 ```
 
 ```{toctree}

tools/bookkeeping-with-gnucash.md

@@ -0,0 +1,15 @@
+# Bookkeeping with GnuCash
+
+## Initial setup
+
+In **GnuCash Preferences** (reached via Edit » Preferences), select the **General** vertical tab (these are alphabetical), and under **Files**, uncheck "Compress files".
+
+```{alert}
+Turning off file compression is crucial because we commit our GnuCash file to Git for collaboration.
+```
+
+Also in **GnuCash Preferences**, select the **Register Defaults** vertical tab, and under **Default Style** at the top select "Auto-split ledger".
+
+```{note}
+This keeps the listing tight but allows quick recatogorization of expenses.
+```