Your Basic Rig
--- The first thing to understand is that your IDPA rig can be used in USPSA, but not necessarily vice-versa.---
--- So, if you are wondering where to begin, gear up for IDPA. ---
Don't buy poor quality gear. If your gear sucks, your performance will suffer.
Click on the below links to learn more about each topic.
Mag Pouches
Magazines - You are going to need AT LEAST 3 magazines; be sure to have 4 or more.
Concealment - Most IDPA stages require a concealment vest. You can certainly use a shirt or jacket, but clearing your pistol while wearing a true concealment vest is likely to be faster.
Some Additional Recommended Accessories
Speed Loader - UpLula Loader - If your thumbs get tired from loading magazines, or if you are shooting a lot of cold weather matches, the UpLula loader will make the job easy.
Microfiber cloth - to clean your mags and dry your hands.
Grip Powder - Chalkless Grip Enhancer - Just a few grains of this nearly invisible powder will give you a clean, positive grip on your pistol. Some people even apply it to their face for a better cheek weld when shooting rifles.
Magazine Brush - Your mags will be dropping in the dirt and sand, which can lead to feeding issues. Pop off the base plate and run a brush through the magazine to keep it running smoothly,