Document bookkeeping with GnuCash

tools/bookkeeping-with-gnucash.md

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+# 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.
+```