I’ve followed everything that I thought I was supposed to do, although I did try to import the demo content first before finding Types 2.3.5. After that, everything seems to have gone in correctly but nothing shows on the website itself. I have only changed one picture, but if someone could help me I’d appreciate it.
Edit: It looks like you have to choose a single page and choose Front for that page to make this work. It’s all set now, though, thank you!