Buying Option #1: Find a Local Dealer and buy the physical products at the store. Store it at home or in a bank's safety deposit box.
Buying Option #2: Buy online from reputable dealers online and have the products delievered to you. Some of the well-known dealers:
Buying Option #3: Buy online from credible dealers and store your gold or silver at a remote vault/storage place such as BullionVault.