|I suggest you go to W3Schools.com and read the tutorials on xHTML and CSS.|
xHTML 1 and CSS 2.1 are the standards, but HTML 5 and CSS 3 are developing standards. The 5 popular browsers (Internet Explorer, Firefox, Chrome, Opera, Safari) continue to grow support for the new standards even though they're not finalized yet. You should learn the current stuff and it's also a good idea to look at the developing stuff too.
Do not use a word processor like Microsoft Word to create web documents.
Apologies if I don't respond to your reply immediately. I don't check this site daily, but you're welcome to PM me as a reminder.