Other reencators usually have the scoop on the places to buy new gear.

This is a hobby, not a race. Impressions are built over time. Buy the basics and then add from there.

Make sure you invest in period appropriate covers for modern luxuries. (Water bottle, phone, wallet)

Stay hydrated. Your clothing is much warmer than modern clothing. Water is your best friend.

Most importantly, enjoy yourself. This hobby is about honoring the brave men and women that fought in/ supported the American Civil War.