HELP!!! Can't upload video!!

[Kuraharu]

Hello, I finally completed my first music video and was trying to update it. I am completely lost. I have no idea how to get my video uploaded or anything. I completed the enter new video part, and tried to upload it. I downloaded the FileZilla and got the username, password, etc. for that, but I have no idea how to use it. Now I tried clicking on the Upload my video part again and it gave me this message: "Operation timed out with 325 out of 325 bytes received" and then told me to report this in the forums. I am completely lost. Can someone please help me fix this??