This covers most if not all of Clojure's syntax.

clojure-syntax.clj

;; Comments
(comment (any-valid clojure-form :is fine?)) ; end of line comments
#_i-am-commented-out "but I am not"

;; Values
5 3 1/3 0.5 "hello" :keyword

;; Lists
[1 2 3]      ;; Vector - Good for finite, short lists
'(1 2 3)     ;; seq - Good for infinite, long lists 
#{1 2 3}     ;; set - Good for unique lists
{:a 1 :b 2}  ;; hash-maps good for pairs requiring lookups

;; Calling functions
(my-func :operand-a :operand-b :operand-c)

my-func   ; evalutes to the function
#'my-func ; evaluates to a reference to a symbol called 'my-func' 

;; Atoms are used to track state that changes
(def my-atom (atom :yes))
(println (deref my-atom) @my-atom 
         (= (deref my-atom) @my-atom)) ; => :yes :yes true

;; Anonymous functions
(fn optional-name 
  [a b c] ; arg names\destructuring
  (println a b c))

; Can't be nested
#(println %1 %2 %3)

;; Thread Macros
; Used to chain outputs and inputs like a pipe operator

; Thread first applies the initial value and output as the first argument of supplied forms
(-> 5
    (+ 2)
    (- 3))
;; => 4

;; Thread last applies the initial value and output as the laster argument of supplied forms
(->> [0 1 2 3]
     (map #(* % 2))
     (mapcat #(range 0 %)))
;; => (0 1 0 1 2 3 0 1 2 3 4 5)

;; Exceptions
; Often better to return data but sometimes interop requires it
(try
   (/ 1 0)
   (catch Exception e
       (println e)))

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; EXAMPLES
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

;; Creating a function
;; (defn symbol vector & body)
(defn my-function          ; - It's the same as calling a function like (+ 2 2)
  [arg-1 arg-2 arg-3]      ; - Just a vector, nothing special just regular data
  (println "arg 1" arg-1)  ; - The following forms are executed when the
  (println "arg 2" arg-2)  ;   function is ran
  (println "arg 3" arg-3))

(my-function)