Welcome, Gerard -
You will no doubt get several offers for recommendations of products, from modelers with experience and expertise within your interests. I'm strictly an aircraft modeler, so I can be of limited help.
First, for using and maintaining your airbrush, may I suggest you look up a website called "Don's Airbrush Tips," there you will find instructions for use, cleaning, assembling, etc. Very well worth the time for a detailed visit, and you will learn a great deal.
Regarding finishing products, for airbrushing I use Tamiya acrylics, for brush painting I use Vallejo Model Color. Many folks favor Humbrol, Model Air, Testor's, Mission Models, etc.
For clear coats I use mostly Testors Gloss Coat or Dullcoat, Alclad's clear coats or Microscale clears. But there are many more that are used by other modeler's, with very good results, by trial and error you'll find what works best for you.
For primer I use Badger's "Stynylrez," the gray and black work well, the white is a bit less useful for me.
May I also suggest you check out some modeling videos by very talented all around modelers, a few are "Scale a ton," "Plasmo" and "Paul Budzik," (I'm not certain of the spelling of Paul's last name, but a quick search will get you there. Spend a little time looking at their various builds, then you will have a great head start.
I think you'll hear from several others with suggestions and welcomes, and remember, questions along the way are very much OK. Enjoy your future modeling projects, I hope we'll see some of your finished work.
Patrick