Hmm... Well there are the fardh of wudu which is commanded in surah Ma'idah which is:

1) Washing the face
2)Wiping the head
3)Washing hands till elbow
4) Washing feet till ankle

ANd then there is the sunnah which are:

1)Intention
2)Bismillah
3)Gargaling thrice
4)Washing wrists thrice
5)Miswak
6)Rinsing nose
7)Khilal of the beard
8)Washing everything thrice
9)Putting water through ears
10)Washing everything in order

Then comes the Mustahab meaning you get reward if you do it if u dont then u dont get sin.

1)Masah of the nape
2)Making wudu in a high clean place
3)To begin with right
4)Face the qiblah
5)Not to accept help from anyone