How do I buy SOL on Solana?

Could you please enlighten me on the process of purchasing SOL on Solana? I'm quite interested in getting involved in this cryptocurrency, but I'm not entirely sure where to start. Do I need to set up a specific wallet or account first? Are there any specific exchanges that support SOL trading? Also, is there a minimum amount that I need to purchase, or can I start with a small investment? Lastly, are there any fees or commissions involved in the purchase process? Your insights would be greatly appreciated. Thank you in advance for your help!