Hi if you are a jungler player like but still are not sure what jungler to play than Shaco is a good option.

For runes this is what i take:
Greater Seal of Resilience x9
Greater Mark of Alacrity x 9
Greater Glyph of Shielding x9
Greater Quintessence of Fortitude
and the reason is because 13armor per, lvl magic res(24 at lvl 18),attack speed (15%) and healt give you lots of survivability.
Also insted of HP quints you can take ad quints.

For masteries i go for 21:9:0 i take all the dmg and per lvl dmg in offence and take inproved smite armor ,mr and hp reg in defence.

You should start at blue camp just stack 3-4 jaxs very blue buff spams(Warning start stacing jaxs from the 1 min mark outherwise they might not last till blue spams),next up go for wolfs if the enemy team doesnt have a jungeler then go for there red and try to gang.But be careful the enemy might see you in there jungler so its best to enter baron pit and use q over the wall.
On lvl 6-8 if you have lantern go for dragon and tell you bot lane to help but finish dragon with smite.Next up you should know the respawn time of all neutal monsters Blue and Red buffs respawn 5 min after you kill them while The Dragon Respawns 6 min after you kill him and finely all small camps respawn after 90 sek.

For items i start with boots and 3 hp pots or you can start with cloth armor and 5 hp ports.Next i take Boots of Mobility because it allows you to reach a lane faster,later i get lantern for free ward and 425 bonus magic dmg to creeps,next up is zeal its increased movement speed makes as and crit , the main item for Shaco is Infinity Endge beceuse it increases you crit dmg from 200% to 250% + it gives you 80 ad.If all is going well you build up Phantom Dancer next,if you are getting focused in team fights and think you lack hp then go for trinity or Frozen Malet.Tiamant is bouth for Shaco cuz of its splash dmg and thats the item because of which i got a penta kill Shaco's Q + Tiamnt is very useful.Next up if they have a lot of armor built than Last WHisper will get the job done,but if none of then have over 150 armor and dont indent to build it anymore Black Cleavers is better.Finely The Bloodthirster you sell you Lantern and buy because it gives better Stats for late game.

For spells take ignite and smite.Smite for easier jungling and ignite for a kill finisher.
You can also take exust insted of ignite,or take ghost for quicker gangs or running away.As well clense is a good spells to help you escape.

Before ganging always tell you team to let the lane get pushed a little and ping on the champion you want to gang.Dont forget some lanes like bot usually have wards so they might see you coming. GL AND HF!