Investors can purchase gold through various ways including Sovereign Gold Bond Schemes (SGB), Gold exchange-traded funds (ETFs), MCX Gold, and physical gold. SGBs carry a sovereign guarantee and offer a 2.5% interest, while Gold ETFs track the physical gold price, combine stock investment flexibility with simplicity of gold investments and are traded like a stock of any company with tax implications. MCX gold futures carry no management fee and are taxed based on short-term and long-term capital gains. Physical gold can be convenient to buy online or directly from shops.