Do NOT invest in Gold coin or bars.
Have him call Schwab or Vanguard for their advice, first. These are extremely reputable companies that have very conservative, and open pricing.
You must understand exacty what you are getting into with gold. If the advertising says they are "Extremely Reputable". you can be sure they are not.
The Devil is always in the details. How much do you pay in commissions? How often? Are you charged a yearly or quarterly additional fee for storage, holding, inventory ?
You can be sure if someone is pusing Gold Bars or Bullion, it's because they are skimming your funds off of your naivete in getting involved in this business.