no idea what's wrong.

Hi, I had just made this free account on the hosting website to test a layout out, but I can't seem to get it to work correctly.
I can log in and everything, but when I upload the code and images for the layout then click on the link to my site, nothing happens.
It's still just a plain page with nothing on it except "Index of/".
Any idea of what I should do- something I didn't do or did wrongly?
I know I didn't really provide much info but if caps are needed I'll upload asap.