Don’t waste your money on a starter kit, just get you a good vice, some quality black nickle or salt water hooks, a few basic colors of Danville Flat Wax Nylon Thread in 210 Denier with a few good ceramic bobbins so you don’t have to rethread everytime you need to change thread colors and you’ll be good to go.
The only other sutff you’ll need is some bed chain, which you can get it at the hard ware store, as well as a few lead or brass dumb bell eyes and weighted cones and you can start tyinig. The only other thing that you may want to pick up is some foam craft sheet and a few foam poppers or cylenders for your top water stuff like bangers, sliders garglers and crease flies.
As for your tying materials I’d pick up some deer tails, super hair, craft hair and some systhetic flash like Estaz, Fashabou, Crystal, Mylar Tubing and some Poly Yarn in a few basic colors like white, chartresue, black, green, blue, olive, pink, purple, orange & red along with a few basic hackle colors and you can tie just about any type of saltwater pattern you need.
Clousers, Copper Heads, Charlies, Deceivers, Surf Candies, Bangers, Sliders, Garglers, Crease Flies as well as a number of bait fish and other Crab and Shrimp patterns can all be tied with the above stuff. Just about all of the starter fly tying kits I’ve seen have a buch of junk that you will never use for saltwater tying. Besides tying a blast once you learn a few basic technique and figure out how to manage your material. There are a lot of great tips on the tying videos!
I would also recommend pick up some good head cement like, Daves Flex Cement, Hard as Hull or Soft Flex for finishing off and resecuring your ties. It’s the only way if you fish salt water!