Hello I am currently learning Construct 3 and I came across the 3D camera object and I added the object to my game but I don't know how to use it. This might be a stupid question but it would be great if someone could help.
Have you checked out any of the 3d examples? If you are looking for a first person perspective, you may want to take a look at the "First-Person Shooter", and "First-Person Platformer" examples that are found right on the start page of Construct 3. Just type in "3D" in the search bar on the upper left hand side. And numerous examples will come up, including those two ;)