I would like to scrape a website which is unable to access directly. First, I need to click on a link on a site. Then, I have to do another selection before getting to the website that I really want to scrape.

I want to scrap a website with Python (I am kinda new to it).
My starting page is a page with information about a convention exposant, I need to get the informations of the exposant and pass to the next one (there is a next button on the website).