I've done the Jersey shore evenigns on my summer vacations, I've learned some stuff that may be helpful, but YMMV.
Ed Mitchell's written some books, specifically on fishing estuaries, bays, etc. Its a good book. Buy it.
Other than that, tides move bait. Predators follow bait. Tide goes in, bait goes up the creeks. Tide goes out, and vice versa. Predators sit at the exit points of the creeks, channels, etc.
Always fish moving tides, slack water not as productive.
Lights attract bait.
A stripping basket can be made from a simple tupperware dish basket, some zip ties, and your wading belt. You'll look like a dork.
I learned its a good idea to wear long sleeves and long pants at night. Also, gallons of bug spray. Hell, I'd drink Deet if I thought it'd help.
Don't get caught somewhere you can't get back to from a rising tide.
Salt marsh. Think about that designation for a moment. The second word, "marsh," is the key here. They're awful, nasty, horrible places of stink, sucking mud, ticks and blood sucking flying beasts. I walked into one to fish the sod banks and creeks one time. Once.
I won't do that again.
Oh, and let me echo Pete41's advise, which is a salt water truism if you don't live in a place you can do this when ever you want: Take a spinning rod, too.
edit: Bugs are worse at night, dude.
edit 2: Buy a good pliers. Find a tackle shop, buy anything you can justify (like your pliers!), ask questions. Take notes. Take a tide chart.
