How do I buy toshi on base?

Could you please elaborate on the process of purchasing "toshi" on a base platform? I'm particularly interested in the steps involved from setting up an account to completing the transaction. Are there any specific requirements or prerequisites that I need to fulfill before attempting to buy toshi? Additionally, are there any fees or commissions associated with the purchase? Could you also highlight any potential risks or considerations I should be aware of? Your insight would be greatly appreciated as I navigate this process.