Sejuani cinder hulk I heard is op. What about a good jungle route. Idk that stuff
You usually start at either the krugs (2 rock creature thingies) or gromp (the frog), with help from either the top laner or duo bot lane (depending on where you are on the map) and make sure to smite it. You usually then proceed to take the nearest buff, and depending on how healthy you are, either proceed to clear the rest of the jungle in a linear fashion or recall and continue. It's also a good idea to experiment what works well with you, since different junglers benefit from different routes. For example: resourceless champions generally don't need mana regeneration and can start at red, but mana-hungry junglers would rather start at blue.
I wouldn't recomment counter-jungling, since you are quite new to the game. If you'd like to try, champions like Nunu with great clears can sneak in the enemy jungle and try to steal a camp or two from them.
Item-wise, Ranger's Trailblazer is a good item if your clears aren't great, Poacher's Knife is good for counter jungling, Skirmisher's Sabre is a very strong item that reduces the amount of damage taken from the target you smite, as well as increasing yours to that target. The blue one (can't remember what it's called) decreases the movement speed of the person you smite, which is useful for any champion that cannot close a gap between you and an enemy.
The four different enchantments are as follows:
Magus: Good for mages, like fiddlesticks, diana, and anyone who's abilities scale off AP.
Cinderhulk: Perfect for all tank junglers.
Devourer: Good for attack-speed reliant junglers, such as Master Yi.
Warrior: Good for AD junglers, or semi-tanky semi-damage dealing junglers like Jarvan or Rek'Sai.