Other guy gave an okey explanation, but to try my hand at explaining:

On a typical round of combat, you get three actions. You can spend them in a variety of ways. An attack is one action, movement (“stride” action) is one action, most offensive spells are 2 actions, etc.

A lot of classes get ways to “discount” actions. For example an early feat fighters and barbarians can take is “Sudden Charge” which let’s them stride twice and attack an adjacent creature and costs 2 actions.

The whole thing lends so much freedom and takes a lot of burden off the DM for needing to homebrew / make up things on the fly. The whole system is very crunchy though (very detailed and particular on its rules) and so doesn’t fit everyone’s vibes.

I literally can’t believe it took us 50 years of ttrgs existing in basically their modern form for us to find the 3 action system. Its so intuitive and liberating compared to every other game system I’ve experienced.

That’s amazing to hear. Lol, I had just put together a fantasy campaign for 2e to start next month. Guess that’s gonna get put in hold.

Star finder 2e

I didn’t know that was on the docket. Where can I fond out more about that?

Looks like a dead thread, but I’ve been playing PF2e since it came out. I bought the books to support Paizo, but literally haven’t used any (minor exception for adventure path books).

Me and my group almost exclusively rely on free tools: pf2easy tools - encyclopedia of rules and monsters. Great for looking up specific rules/stats
Path Builder - For building / Managing characters. Has an 8/10 mobile app and google drive sync (extra handy for moving sheets between devices)
Archives of Nethys - Authoritative source for rules. I really only use it for “exploring” new content. I don’t know if they’ve maintained this rate, but used to be new content/rules would be up on this site within 2 weeks of them being published in books.