Welcome and enjoy. Lots of good advice on here and most of them are friendly.

The kit will get you started. You can upgrade things as you need to. If I knew then what I know now I would have started with better small tools for sure. It makes it so much easier to tie when hackle pliers grip and bobbins don't cut thread.

When it comes to materials, best advice I can give is use good thread. If you don't have to worry about the thread breaking or being too bulky you can concentrate on tying and have more fun doing it. Oh and don't ever tear apart a fly or jig. The ugliest ones I have ever tied have caught me some of the biggest fish.