How to buy roost on Coinbase?

Excuse me, could you please explain the process of purchasing Roost tokens on Coinbase in a step-by-step manner? I'm a bit new to the cryptocurrency scene and would appreciate some clarity on the procedure. I've heard that Coinbase is a reputable platform, but I'm unsure about the specifics of buying Roost on it. Could you guide me through the process, from creating an account to finally owning Roost tokens in my wallet? Thank you in advance for your assistance.