First time on the site? How to show the tutorial page on the first visit and not get banned in the search engines?

Question

PHP

There is a task for the visitor to show the training page for the first time, and on further visits, the usual main page.
Are there technologies that allow search engines not to receive this tutorial? Well, except for looking out for user-agent.
Is it possible to transparently separate the user from the search engine? Will there be a ban when showing such a page to people?
UPD: So far I've stopped at setting cookies. And checking by UserAgent. I will not show the training page to the main bots. But I don't like this solution. It's kind of rough.

Answer 1

Check the User-Agent value, this should be the value of the bot, if so, don't show him this page

Answer 2

Even if you show such a page to a bot, what's wrong with that? The page is shown 1 time, the bot goes constantly many times. Well, he will see such a page once, and then he will always see the content of the site, nothing.

Answer 3

Radiocity said everything correctly or a pop-up window on JS or something like that

Answer 4

You can use Intro JS