For those not familiar with the Pathfinder system, you can find all the rules here for free:
https://pathfinder.d20srd.org/
The first thing to do is decide what class and race you want your character to be. The core classes are: barbarian, bard, cleric (or priest), druid (nature priest), fighter, monk (a martial arts type character, not a Christian type monk), paladin (holy warrior), ranger, rogue, sorcerer (spellcaster who gets spells from innate ability), wizard (spellcaster who gets spells from study).
The races are: human, elf, half-elf, dwarf, halfling (i.e. hobbit), gnome, and half-orc.
You can read about the classes here:
https://pathfinder.d20srd.org/coreRulebook/classes.html
And the races here:
https://pathfinder.d20srd.org/coreRulebook/races.html
Stuff like your characterās gender, appearance, personality, and background are up to you.
A balanced adventuring party should have at least one fighter (or barbarian, paladin or ranger), one wizard or sorcerer, one cleric, and one rogue. Rangers and druids are less useful in a dungeon crawl adventureā¦ theyāre more appropriate for the great outdoors.
Anyone who wants to play should throw out which class and race they are most interested in, then we can move on to what particular abilities that character will start with, and generating ability scores.