Mate you'll need a minimum 10 foot light surf rod and a 4000 series reel to get you started- I reckon 8-12lb braid would be sufficient and use a good flourocarbon leader of around 6-10lb with a single long shank hook in size 6, 8 or 10. (you can buy pre-packed Whiting packs made by Gillies and they are pretty good value for what you get... hooks, sinkers, beads and swivels all in a handy little tackle box- I use the flathead ones for bait fishing around Lane Cove River and they are very good quality... just dont leave them open on the sand unless you want the hooks to rust quickly, lol)
The BEST baits (as mentioned) are live beach and blood worms or pipies... Squid is also a good bait for Whiting in small 1cm wide strips around 5cm long.
Use a rig so you have the sinker above the swivel attached to the mainline, and the leader length should be 1m MINIMUM but I like 1.5m, other good baits are live yabbies (pink nippers) and mussels... There are a few places that sell live Blood and Beach Worms but they are not cheap- you will get about 3 worms for around $10- and if the Whiting are "on the chew" they wont last long... bycatch will be Bream, Salmon, Trevally, Flatties and the odd taylor...
If the swell is up or the current is running hard then you might need to up the sinker to a heavier one.
I hope this helps in some small way.
Tight lines
Anthony