Jax is OP OP. This guide works actually in Bronze, Silver and even Gold. Don't care about flame, it's just an Off-Meta pick.

Also read the notes for the items, runes etc. too.

Why I don't buy sightstone? You can rush instead face of the mountain (if you buy it, USE THE FCKIN' ACTIVE OF IT) for better stats. You just have worse vision, BUT you just can place 3 wards anyway. Warding is the MISSION OF THE TEAM. But you should buy Pink Wards sometimes!

Engaging combo: E + Q + AA --> Proc Thunderlord and than run if you trade or use AA if it's an all-in engage.

Escaping Combo: E --> stun your enemies while your ADC is running, then following him with a Q jump.

Cheers.

P.S. Actually I don't think, that the demand is pretty high, but if you want I can make a more in-depth guide. I played Jax sometimes in ranked as support and sometimes it works. (In normals, when I'm playing with Bronze dudes, it works evertime and my first 3 normal games I always got a S). Look at the match-ups.