Library Intro/guide on the interface of the website?
Not sure how exactly it's called, but met a while back, forgot to save the page on nidaba. Probably there are more solutions. Preferably Vue, but probably the vanilla and the Bible can be screwed (tipo tooltips).
In General, the effects supposedly when the user goes to the site/service with many elements of the interface, there is a animated effect like dimming workspaces, pointer to the desired button/action prompts, and so on.