The steps for creating a character in Pathfinder are outlined here.
There is also a very handy table here that outlines the XP needed for each level, lays out the levels at which a character gains Feats and Ability Score increases, and indicates the expected starting wealth for a character of that level. In your case, the characters will have 2 Feats (not counting bonuses from Class or Race) 1 Ability Score increase, and 6,000 GP starting wealth.
In Pathfinder, equipment and magic items are a very important aspect of the game's expected balance. This starting wealth is essentially "spent" on starting items and gear for the character to simulate the gear and equipment those characters would have gained through adventuring if they had been created at level 1 and played up to their current level.
The Core Rule Book also has suggestions for how to help your players allocate this starting wealth:
Characters should spend no more than half their total wealth on
any single item. For a balanced approach, PCs that
are built after 1st level should spend no more than
25% of their wealth on weapons, 25% on armor and
protective devices, 25% on other magic items, 15% on
disposable items like potions, scrolls, and wands, and
10% on ordinary gear and coins.
These should not be interpreted as hard and fast rules, but more as guidelines to the GM to keep the players at the expected power level. Feel free to deviate from this, but do so knowing that your players may be stronger or weaker than the module you are running expects them to be.