Gnomes are as per the PHB description, except as follows;
• They do NOT suffer the magic item malfunction chance.
• Dark Vision – This form of sight is black and white, but provides otherwise normal vision even in total darkness, unless it is magical in nature.
• Classes Permitted: Fighter, Ranger, Specialist Wizard, Cleric, Thief, Bard. May combine any two allowed classes as a multi-class, except for Ranger.
• Gnomes are the only race that can be multi-classed Specialist Wizards.