Not Updated For Current Season
I am RiotBasse and I have played Jax for a while now I decided to make a guide how I play Jax!
I choose this runes because you are getting your dodge chance up pretty high, you get some AP and magic penetrarion to start with and that will help you in the begging alot.
I play Jax as a hybrid, therefor I get 21 in offense, taking attackspeed, magic penetration. I am not trying to take crit because your will not be critting with this build so much, so it felt like waste taking it.
I start with an amplifying tome to give me so HP in start and some AP. Then I rush boots and after, I buy some lifesteal and spellvamp with hextech gunblade. As always I buy the rageblade, wich is awesome for Jax. Then I want some defensive items and the sheen effect, so TF is perfect! After that it's straight to Bloodthrister, for the attack damage and lifesteal. This is a lifesteal/hybrid build. The 6:th spot is really optional but I often take Void staff there for the AP and the magic penetration, with helps my abillities do more dmg. In some games I just need to counter the other players so I can buy almost everything there, from Thornmail to The black cleaver. So have that in mind if you don't really know what to buy for 6:th item.
I just take some random stuff here, I don't think it really matters so much, all of Jax spells are so good. I do like to max the Q skill first but I just see which spell I use the most in the game and max it. If I her*** alot it's worth maxing Q and W, if mid game starts early I do level up E some.
I take ghost because you will need it when running away from or after someone. Can switch this for flash but I like ghost more. Ignite is really optional, could switch this to exhaust or whatever you need. If I am playing ranked and know I am up against a Tryndamere or a Yi, I normally switch this spell to exhaust.
Jax is good at farming at level 6, when he got his attackspeed. In laning phase he does okay, I guess. But ofcourse, he has harder times facing a Caitlyn than a poppy. You should try to dominate your lane and her*** if possible with Q and W but don't overcommit, it will kill you.