Jungling can be difficult if you don't have masteries and runes granting you additional health, and armor. This doesn't however mean that it can't be done. If you are low level, and aren't really able to fill out a mastery tree to tier three, I recommend you drop what points you have into the defense tree, to get some early additional armor, and maybe some magic resist too. Many people will start by purchasing a cloth armor, giving additional armor, and reducing the damage that the jungle baddies will be able to deal to you. Also get some health pots, to regen some of that health as you are running between camps. Smite is a must have for many champions, especially if you don't have masteries and runes. Warwick is generally considered to be the baddest bruddah in the jungle, but some of my favorites are Nunu, because his consume (Q) is very similar to smite. If you get both consume, and smite, you will have no problem clearing the jungle in no time flat! You can probably go steal up their jungle too!