Made an account to mobafire because of this guide.
I got started with this pretty nicely. I'm not a good jungler, believe me. This was my 3rd time jungling, first 2 times I got left behind soo much and failed alot.¨
I got around 16-1-12 score with this build, looking forward to playing more LoL after that game :D

I read the first few sections and my mind was made up. -1. Reason being you are building trinity force and frozen mallet, that is two phages which is a waste of time and money. The second reason is you are wasting valuable magic resist gylphs on attack speed that barely give you any in the first place.

I was just posting what worked for me, but I will definately have to give it a try thank you very much for the tips.

He never wasn't OP my friend. Jax is too awesome to be underpowered.

On a more serious note, the build is a bit iffy. You should pick Guinsoo's Rageblade BEFORE Hextech Gunblade. It will give you damage much earlier for less cost, and the attack speed gain is awesome. Berserker's Greaves isn't such a good choice on Jax, as the attack speed won't help him as much, due to how squishy his nerf made him. Last thing on the build is that Frozen Mallet and Trinity Force are inefficient together, as it's a waste of their passives. You should choose one or the other, your choice.

As for the guide, this guide should help you BBCode like I did in this comment:
Making A Guide

It'll help you make the guide look nicer. You don't have to take my advice on your build if you like it how it is, but I highly recommend you see that guide, it's so useful :)