So, What should I build on jax ?

Step 1: Trinity force Step 2: Blade of The Ruined king Step 3: You have done well

Would recommend against going , is better on him, after those two you pretty much build tank, is pretty much what you should have most of the time, with the last item just based on the game. that's the standard build but can get away with building a few different ways, even AP in some situations.

Also, don't rush tier 2 boots before finishing a core item unless you are forced to.

Personally:

Replace with for jungle

cheap build except for hexblade.

Rush this

Get this

den just go full tank is wat a frand told me.