Okay, so college tours are like a field trip where you get to visit a school before you decide if you want to go there. Kind of like when you go to the store to try on clothes before you buy them.
You get to visit all the important places on campus, like the library, the classrooms, the dorms, and the cafeteria. Someone who knows a lot about the school will show you around and tell you all about what it's like to go there.
You can ask questions and take lots of pictures so you can remember what the school looks like. It's like when you go to the zoo and see all the animals, except instead of animals, you get to learn about a school!
Going on a college tour is really important because it helps you figure out if you would like being a student at that school. It's like trying on a dress to see if you like how it fits before you buy it.