Hi there. I've played a WW druid before and it's a pretty solid build. You can tank damn near anything with it, but theres a few things you have to be careful of.
Firstly there is a guide for WW druids in the druid section of Diabloii.net I think it's called solo werewolf by hellninjacommando and it's pretty good.
Anyway stats:
Don't put a single point in Dex or NRG. Instead just alternate all your points between Str and Vit. No NRG coz none of the spells in this build are expensive enough to warrant it.
No dex? Thats coz most WW skills (WW, HoW, Feral Rage, Fury) add to AR, and the best weaps are 2handers so it makes shields block rate useless.
Skills Summoning:
Max Oak Sage if your on HC or playing with a grizzly summon.
Max HoW if your using wolves to max their damage.
Carrion Creeper about Slvl 12-14, but after this the percentage of regen stays at 10% and it just gains life. It can regen your HP faster than Super HP pots at later difficulties.
Dire Wolves or Grizzly. See above.
Shapeshifting:
Max WW and Lycanthropy (obviously

)
Feral rage - a couple of points will be enough to use the LL.
Max fury the AR and damage bonus makes this build.
Max Lycanth first, then Oakey if you're taking that route. If not then max CCreeper, along with your wolves. Then power up HoW to really help your wolves slaughter. Max fury as soon as you get it.
Weapons:
Use Large Axes for Act 1, Battle Axes for Act 2, and Mauls after. All have fast attack speeds and decent damage. Try to socket them with high elemental damage until you get fury.
Armour:
Use anything socketed. Rubies Multiply your health, Amethysts multiply your AR.
Jewellery:
I find 1 ring with + to AR, a decent resist amulet and a ring with chance to cast frost nova when struck all help.
Problems:
Until you get Fury you'll suffer from low AR and damage. Counter this by using weaps with + to AR or rings. Alternatively socket armour with amethysts. Use socketed elemental damage (I use topaz) to compensate for lack of damage. However it's not such a problem if you use HoW. Once you get fury the game gets easy. You'll also suffer a bit with low defense. You could always bang a few EL runes in here and there.
If your playing HC I highly recommend oak sage. With the double boost of Lycanthropy and Oak sage, plus armour socketed rubies plus + life charms you can have silly life that no other class can touch. (I had about 450 life with a lev 20 character).
Hope this helps
