Nunu should be the noob jungler instead of WW:

1) Similar amount of sustain
2) Better ganks, can gank before 6
3) Good to learn counterjungling with (pretty much essential these days)
4) Have utility even if you're behind.

WW is actually a pretty bad champ to learn jungling with. He's a bit too easy. Gets you a bit spoiled on his sustain.

I'd go for Jarven.

Warwick is good for beginning jungling, just make sure that you don't play him like every other jungler and expect massive sustain from them as well.

I personally started jungling with Master Yi, then Udyr, Jax and now I'm currently playing Lee Sin.

Nunu, hands down.

Q = Smite/Health Pots
W = Boots/Attack Speed boost
E = High damage early game/Perma-slow
R = Slow/AOE High damage Ult

Start with boots 1 hpot and a ward or start with Regrowth Pendant and 1 hpot. Just keep your W constantly going on yourself or a nearby allied champ

Q-W-E-E-Q
That should be how your skill sequences go before 6. Gank often

ww - trundle - udyr imo.