The guide is very basic you need to learn how to do BBcode and you should put more information like team fights, why you chose that tipe of masteries, and you need to put in the item sction some other items that may work with Jax.
The build is good but i replace the the bloodthrister for a Frozen Mallet.

And if you have time and won´t to see a good guide and build go see my jax guide.

But i Think this is a work in progress so +1

Thanks ,i'll try that man^^ thanks for your votes ;) this is my first guide soo tell me what am I doing wrong and what can I fix.

Dude,nice guide.I love Jax by the way(he is probably one of 10 best OP champs in the game).
Nice but,you may like to build Sheen then Guinsoo's Rageblade,and then Trinity Force.
Believe me,that is very useful.Starting with Doran's Blade is ok,but when you start with Doran's Shield you have much more potential.

You should go more in Depth about Phases of the game, like Lane, Roam, Jungle, Teamfight, Positioning.
Also for Items and general Strategies.

Ps. Getting Doran's Blade as 1st item is really really bad.

Thanks guys,i'll try to fix my mistakes,this comments mean a lot of for me because this is my first guide and i didn't know about situation items and thanks man for you advice for that.I'll try to fix my guide soonest as i can.

Nice guide. But tell me why you wrote that Jax is squishy? At lvl 1 he has more HP than most champions started with Doran's. If you play him solo top, when buy Dorans Shield you have more HP than some1 started with Ruby Crystal. So I can tell that Jax isn't squishy at all. One more thing to say - instead of Berseaker Greaves you must place Mercurys or Ninja Tabis... those 25% AS you can get from Black Cleaver - which you take instead of The Bloodthrister. Black Cleaver is a lot useful item on Jax than Bloodthrister. Mercury Treads are lot better than Berseaker because you will be stuned or snared etc. a lot in teamfights/chase so Tenacity is beast on Jax.
One more thing: Jax's ult doesnt give him damage (without the passive-every third attack 100 Magic Damage). It gives him Magic Resist and Armor equal to percentage of your AD and AP. So you can correct it :).

You should add situational items because you shouldn't do the same build every game which is what you suggest to do in this guide.