Experts are like commoners but they have expertise in any ten class skills, that's really the big difference there, and this represents like artisans and shopkeeps and stuff

Role: Utility

Characteristics: Skill focused NPC class, like Courtier and Factotum sorta kinda but far less powerful.

Source: Dungeon Master's Guide

Game Rule Information

The Expert has the following game statistics.

Abilities: Whatever abilities your class skills are in really

Alignment: Any

Hit Die: d6

Starting Gold: 4d4 x 10 gp

Class Skills

The Expert's class skills are Any ten skills

Skill Points at 1st Level: (6 + Int modifier) × 4

Skill Points at Each Additional Level: 6 + Int modifier

Class Features

All of the following are class features of the Expert.

Weapon and Armor Proficiency: A Expert is proficient with The expert is proficient in the use of all simple weapons and with light armor but not shields.