There are ways how you can invest in precious metals like gold. You can choose to buy gold in bars, coins, and jewelry. These three forms have their own price bracket. The price of gold bars (bullion) depends on weight (troy ounces), gold coins go up depending rarity, and jewelry depends on antiquity and craftsmanship.
The easiest way among the three is to invest in buying broken gold jewelries. The question is how it becomes the easiest? My answer would be because almost every person in your area owns a gold jewelry, and pawnshops are located everywhere. Jewelries are just like any other frequently used gadgets or appliances if misused it tends to be broken. Who would want to use a broken necklace, a deformed ring, or an earring that the other pair was missing? If these accidents happen, what the owner would do is just keep it in jewelry box and kept it there for all eternity without thinking or exerting effort to find a certified jeweler to have it repaired so it can be used again. Once it got broken its price as body ornament goes down, but as precious metal its value remains the same (IMHO).
Anyway, I am not really expert when comes to buying or investing in gold and I also do not know how to buy gold. If you wanted to purchase precious metals like silver, gold, palladium, platinum and others. You should visit Golden Eagle Coins (goldeneaglecoin.com) the people behind the company are in this kind of business for more than 40 years. For inquiries, you can always visit their showroom or you can call their customer service team.