Well, how can I say this in a kind way, this is REALLY basic and I think you should try first and look in the Help file provided with your application, then on some sort of tutorial that you can find everywhere on the net and THEN post for help in a forum.

Anyway, the concept is:

you create a model for your pages, so called Master Page, then import your text, place it in the first page and then, if there is some text not fitting you will see a little red plus sign in the lower right corner of your text frame. You have to click on that, “load” the cursor with all the overset text and place it in a new page, based on the Master page you've prepared at the beginning. You can do this in an automatic way, look for “text flow” “automatic text flow” in your help file.

I've just typed “indesign” in the search field of https://www.youtube.com and here you can find the result…

C'mon, try, you'll learn much more if you discover by yourself, at least, this is my opinion.

Good luck

g