To start, I wouldn't over complicate it. Solid boots, thick pants (i like First lite's sawbrush pants), a shotgun, and pack/vest to carry your water and birds. If you have already have a shotgun, just use that -- most gauges work. Use #6-7.5 non-toxic, and be sure to pattern and practice with clays. If you have a backpack, you can start with that, and eventually upgrade to something like a final rise pack. I think the best advice is to start with what you have and the basics. Most important part is just getting out there and to put the miles in.