Can I take the tour again later?
Yes — open the account menu at the top right of any portal page and choose "Take the product tour". It starts from step one and you can do it as often as you want.
From the guide The Guided Tour.
Starting it again
Open the account menu at the top right of any portal page and choose "Take the product tour". It starts from the beginning, as many times as you like. This is also how to see it if you never got it — for example if you signed in on a new device, or created your account before the tour existed.
Read the whole guide: The Guided Tour