You have to close everything with another tag such as openingtag:<marquee> closingtag:</marquee>.

You can scroll the name using the <marquee> tag. The marquee tag can be used to slide things in all directions.

Yes, you have to put a marquee tag inside another with different directions.

If you mean a scrolling text banner, then you can use the Marquee tag. It is not a popular tag among web designers because scrolling text can look very tacky and get annoying. Not all browsers support the Marquee tag. It is one of Microsoft's tags, designed for Explorer. Here is a simple example of how to use it.

<Marquee>This will give you scrolling text, in some browsers</Marquee>

You cant in HTML. Try Javascript (however it is better if you use a picture editor like Macromedia Fireworks and save the image as .jpg),

You can. You would have to program it though. I have some of the "text moving features" added to my personal HTML. You could do the same.