A custom cursor is something you'll see on a lot of sites on neocities, including mine. There are a few ways to do it.
Let's say that the top of your site looks like this. Go to Cursors.4u and pick a cursor that you like, then scroll down to the code area.
You should almost always use this option, but if it doesn't work see the CSS option. It'll be almost the same steps as this one! Paste the code you copied between the head tags of your site and it should work! As for the CSS option you need to put it in style tags as seen below.
Now, to make your own cursor is different. I would say to use the first one because it works the best but if it somehow doesn't work for you try the other two.
you can also make it so that hovering over links causes a different cursor.
this is normal text!
this is a link!