Where is best to buy Solana?

Could you kindly provide some insights on where the optimal place to purchase Solana would be? I'm interested in diversifying my crypto portfolio and Solana seems to be a promising project. Could you recommend any specific exchanges or platforms that offer Solana trading with reliable security measures and competitive trading fees? Additionally, would you mind sharing any tips on how to safely store Solana tokens after purchasing them? I'm keen on ensuring the security of my investments. Thank you for your assistance.