For a while now, the main disadvantage that Paizo's Pathfinder 2e has had competing with its more popular sibling, the fifth edition of Dungeons and Dragons, has been the lack of digital creator tools as broad and useful as D&D Beyond.
Actual play podcasts and streams are a great way for newcomers to tabletop role playing games to get a taste of how these games play, and Pathfinder has a few we'd recommend you check out if you're looking to branch out.
Learning how to play Pathfinder 2nd edition is relatively easy for people who play tabletop RPGs, especially Dungeons and Dragons 5th edition.
In tabletop role playing, a system is the codified rule set used to represent the world and the player's experiences of it. Dungeons and Dragons uses a system based around a d20 dice roll, with modifiers that change the possible spread of numbers you can successfully roll, and other dice to represent things like the damage dealt to characters or monsters in the game's combat system.
One of the things that makes or breaks running tabletop games, especially in our modern pandemic-altered world where many games are run online, is a robust digital toolset that lets you access books, make characters, and otherwise easily play with friends when you aren't sitting around a table together.
Pathfinder 2nd Edition is the flagship line for Paizo, one of the larger RPG companies that isn't Wizards of the Coast.
I'm old, and I've been at this hobby for a while.