best bet is google demersal jigging Perth and start from there some good YouTube vids on the subject , the key is you need good ground with fish to start 

Hey mate, happy to help out but a lot to go through so feel free to pop in or if you're not close give us a call.

The biggest thing I have picked up on is that every make of jig is different - when trying out new jigs I test them a few m under the boat first and see how they look in the water with different movements of the rod/winds of the reel. Because of this, I beleive there's no tried and tested method of fishing jigs. Last trip all I ended up doing was bouncing the rod with the jig just off the bottom to get fish - any other methods just wouldn't gfet them biting.

 Dont be afraid to keep changing jig style and color but the best tip I can give is to try and keep the jig as vertical as possible with the lightest jig weight you can

As said before a change in technique can bring them on the chew and what works today may not work tomorrow 

Good luck !!

 while there are a million on the market the best ones ive used and still use above all else are the Haoli half pitch (90grams) and the Current Zeek (100 grams ) with jigging sports or harbour assists  both of these with a slow pitch retrive with plenty of rod tip action catch dhus, baldies , pink snapper and breaksea cod along with losing a few to sambo's , everyone has there favourites but ive seen these 2 styles outfish other jigs and baits on my boat many times before 

Found this good...right gear and Jigs help.
https://www.youtube.com/watch?v=fv-x3bT4Q38

Someone posted this link a while back for an intro to jigging and it has helped me out heaps


www.anglers-secrets.com/slow-pitch-jigging/

 Thanks for all the info everyone hopefully i should get to put it to use in the coming weeks 

 Thanks for all the info everyone hopefully i should get to put it to use in the coming weeks 

 You've got a PM