1. Consider your decision
2. If you still want to go ahead,plan the design beforehand with a good old pad and pencil.Decide what you want the content to be,the message thats to be delivered and your general look.
3. reconsider your decision
You'll need to invest in an editor. Given the lack of experience your questions appear to indicate you would be better investing in a wysiwyg (what you see is what you get) type of editor ... there are many about and the prices vary.
To upload it many of the better editor systems have a publishing or uploading facility ... failing that you'll need some form of ftp (file transfer) program.
web space .... if this is for a personal page or site your internet provider proabably has supplied you with some space on their servers If its for a business site I would suggest further investment