Dragon side;
dragon pit - just in the middle where shuttle would go if down/not being killed.
blue buff try path and the trip path the other side of it.
basically the trip paths, don't put them in bushes if you can help it 9/10 times you won't see a tank coming as the jungles know the most warded bushes.
Control wards:
the bush above baron and below the red, that ward stays there 90% of the game, same wit the dragon side below dragon and above red.
the bush to the side of the mid lane tower - is a common path for jungles to come this way, also seldom checked.
if you can get deep wards they are the best as you can plot a reaction play or catch them out before they even make one, warding the trip path of the ''wall gate'' is also a good position if you can slot one up there to see who's going to what side.