Anyway, regarding how to get used to new jungle. Use Junglers with high sustain (i.e. Warwick, Trundle) or something idk. I played a game with Warwick and went 12/1/12, so I'll just post what I did throughout the game.
Anyway, I definitely suggest using Warwick jungle right now. The LS passive negates a lot of the really tough early jungle. Furthermore, build Poacher's Knife if you want Warwick to become a super-fast jungle clearer (which between the 2 second MS buff and the 20 extra gold puts him ahead of everyone else). Also, here's the pathing that I took in this game.
1) Frog (smite)
2) Blue
3) Wolves
4) Red
5) Rocks (smite)
6) Chickens
Frog gives Quill Coat-esque thing and Rocks give on-hit Udyr stuns (basically pretty good early clear). As the game progresses, never smite Chickens for ward detection. I'd honestly say the second-most important smite buff is Rocks, since you can do bonus damage to turrets (which is aight).