diff --git a/src/intro-clojure/basics.clj b/src/intro-clojure/basics.clj
index 55467c7..af72acf 100644
--- a/src/intro-clojure/basics.clj
+++ b/src/intro-clojure/basics.clj
@@ -199,10 +199,40 @@
   (+)
 
   ;; count a's in a sentence
-  ;; ??? should #(%) be introduced?
+  ;; lambda syntax
+  
+  ;; a #() is the syntax for the lambda
+  (#(-> 3)) ; 3
+  
+  (#(inc %) 1) ;2
+  
+  (#(= % %) 1) ;true
+  (#(= % %) 2) ;true... always true
+  
+  ; syntax for the first, second parameter
+  (#(= %1 %2) 10 11) ;false
+  (#(= %1 %2) 10 10) ;true
+  
+  ; syntax for the first parameter
+  (#(= % %2) 10 10) ;true
+  
   (count (filter #(= \a %) "mama"))
 
   ;; squares
   (take 10 (map #(* % %) (range)))
+  
+  ;; explain map syntax
+
+  ;; map syntax
+  ;; remember
+  (= 
+    (inc 1)
+    2)
+  
+  ;;simpler
+  (map inc [1 2 3])
+  
+  ;;more difficult
+  (take 10 (map inc (range)))
 
   )