How do I buy or trade cryptocurrencies on Kraken?

As a cryptocurrency enthusiast, I'm keen on understanding the intricacies of trading platforms. Could you elaborate on the process of buying or trading cryptocurrencies on Kraken? Specifically, I'm interested in knowing about the account setup process, verification requirements, supported currencies, trading fees, and any security measures implemented to safeguard user funds. Additionally, I'd like to know if Kraken offers advanced trading tools and features for experienced traders. A detailed walkthrough would be highly appreciated to help me make informed decisions.