I would suggest you play Warwick jungle.
You can't really mess up the runes or masteries for Warwick. But I can give you tips here:
Runes just run all attack speed everything. Simple.
Masteries put points on offense and defense, especially for the ones that help you with farming jungle.
For spells max his Q first, max W second.
For his start items, Trinket, Matchete and a Sight Ward or potions if you want but you really wont need.
With this setup you can solo dragon at level 5 with a hp pot or 2 to be safe. Try practicing in custom.
Warwick is a jungler who hardly ever gank until he hits level 6. Start with one point on W [remember to Max Q first just start W] at either the double Golems or Gromp [whichever is closer to bot lane so you can get a leash]. Smite the larger Golem or Gromp, kill them then go to the closest buff camp {Red if starting Golems Blue if starting Gromp] Kill the buff, now either walk to the final camp and clear or go to river and kill the Crab first then kill the last camp afterwards, your choice.
At this point I say go back, upgrade your trinket and to be honest I wouldn't even but pots just wards from here. Do the above step again, head for the Golem or Gromp on the other side of your jungle and clear in same order. Go be as soon as you finished, spend your money then go back to your original start point and clear everything from closest to you first and just repeat this. Keep doing the same rotation until 6, buy a Devour enchantment for your matchete and keep farming. Once you hit 6 your ganks are so easy just walk into lane and ult the person.
Good things about Warwick is he has really good sustain and initiate.
Things to be careful of, don't have E on when ganking from far, try to turn it on when close because it will warn low hp targets you are near by.