diff --git a/ledger-examples.md b/ledger-examples.md
index abfe75526..82a4e3a63 100644
--- a/ledger-examples.md
+++ b/ledger-examples.md
@@ -3,23 +3,39 @@ title: Ledger examples
 layout: default
 ---
 
+Inspecting transactions:
+
     # show me expenses for october (--period)
-      ledger b Expenses -p oct (--period)
+      ledger r Expenses -p oct
 
-    # what's the mont expensive? (--sorted)
-      ledger r Expenses -S amount
+    # what's the most expensive? (--sorted)
+      ledger r Expenses -S amount --tail 10
 
-    # how much was spent on grocery?
-      ledger r grocery
-      ledger r grocery -W (--weekly)
-      ledger r grocery -M (--monthly)
+    # how much was spent on grocery? (--weekly, --monthly)
+      ledger r Grocery
+      ledger r Grocery -W
+      ledger r Grocery -M
 
     # what did I spend my Mastercard on? (--period, --begin, --end)
       ledger r mastercard
       ledger r mastercard -p "january"
       ledger r mastercard -b 01/25 -e 01/31
 
+Graphing:
+
+    # Graph my bank account balance, monthly
+      ledger r Savings -M
+
+    # Graph my expenses, monthly (-n = --collapse)
+      ledger r Expenses -M -n
+
+    # ...what's the average per month?
+      ledger r Expenses -M -n --average
+
+Simple:
+
     # what did I do yesterday?
     # ..list transactions on this day
-      ledger reg -p 01/26
+      ledger r -p 01/26
+      ledger r -p yesterday
 
diff --git a/ledger-periods.md b/ledger-periods.md
new file mode 100644
index 000000000..a2e576fe5
--- /dev/null
+++ b/ledger-periods.md
@@ -0,0 +1,54 @@
+---
+title: Ledger periods
+layout: default
+---
+
+    [INTERVAL] [BEGIN] [END]
+
+Interval:
+
+    every day
+    every week
+    every month
+    every quarter
+    every year
+    every N days     # N is any integer
+    every N weeks
+    every N months
+    every N quarters
+    every N years
+    daily
+    weekly
+    biweekly
+    monthly
+    bimonthly
+    quarterly
+    yearly
+
+Begin:
+
+    from <SPEC>
+    since <SPEC>
+
+The end time can be either of:
+
+    to <SPEC>
+    until <SPEC>
+
+Spec:
+
+    2004
+    2004/10
+    2004/10/1
+    10/1
+    october
+    oct
+    this week  # or day, month, quarter, year
+    next week
+    last week
+
+Examples:
+
+    $ ledger r -p "since last month"
+
+See: http://ledger-cli.org/3.0/doc/ledger3.html#Period-Expressions
diff --git a/ledger-query.md b/ledger-query.md
index 8ed711360..726176c24 100644
--- a/ledger-query.md
+++ b/ledger-query.md
@@ -14,4 +14,6 @@ layout: default
 Examples:
 
     ledger r @taco
-    lede
+    ledger r comment =~ /landline/
+
+See: http://ledger-cli.org/3.0/doc/ledger3.html#Complex-expressions
diff --git a/micronutrients.md b/micronutrients.md
index 9bd6d4d42..e4f46163e 100644
--- a/micronutrients.md
+++ b/micronutrients.md
@@ -34,7 +34,7 @@ layout: default
 
  * Sources: Nuts, needs, veg oils, leafy veggies
  * Major benefits: anti-oxidant, skin
- * Dosage: up to 10k IU? (RDA says 22IU daily, wtf?)
+ * Dosage: up to 22IU daily for adults? (RDA)
  * Fat-soluble 
 
 ### Vitamin C