If you are running modules from Paizo, then there are two importers to look at:

• Deidril's Pathfinder 2 PDF Import
• PDF to Foundry Importer

They cover different modules, so which one you use depends on what module you're running. Both require that you have bought the official PDFs (they look for the watermarks).

I also really like Health Estimate - it makes it so that the players see "badly injured" instead of HP remaining or a health bar.

One word of advice though - go easy on the modules you install. Learn the basics first, then be picky about what you add. An individual module may be fine, but its code may collide with another module and make the whole system unstable in ways that are hard to detect.

When that happens, use the module "Find the culprit" to help narrow things down.