This is a guide on how to PWN majorly starting with all the concepts of jungling then laning and team fights.

The runes I have chosen are overall good runes to play any character with.
Armor pen. helps with ganking so you can bypass the basic armor that the champions have early game.

I go mainly defense because the dps output of Udyr is already rediculously strong so he doesn't need help in that area. I chose utility over attack because if you put 9 in utility you can increase the duration of the Red and Blue buffs.

The items help stay strong in any point of the game. Sometimes Udyr falls behind early to mid game depending on how you play him. With the weapons I chose this problem should be eliminated because they increase his stats significantly.

As ill explain later it is good to pick up tiger stance for jungling because it increases your attack speed by alot and is overall a good jungling skill. As soon as you turn level 2 pick up turtle stance because it greatly increases your survivability while jungling and ganking by alot. Most people would grab another rank of tiger at level 3 but if you get Bear Stance it will allow you to get a gank early game which will not only give alot of gold but also keep you the same level as everyone else.

These spells are pretty self explanatory you could replace ghost with teleport or flash. Smite is absolutely neccessary or else the jungle will not be friendly to you.

Usually in early game use the jungle to level up and jungle and get mana regen. Late game it can be used to heal after a nasty team battle. WHen you jungle it is genereally a good idea to start at golem then wolf then wraith then lizard then mini golem. (then recall if you have low health).