I checked out your errors, there isn't anything major. To be truthful, and even a little brutal, your errors are a result of sloppy code writing.
You are using "transitional" for the page type, so you can't get away with all the things you used to be able to get away with. Your HTML tags and elements must be in lower case, the values must be enclosed in quote marks, and tags must be nested. You can't have
<p><b>Nice text here.</p><p>More text</b</p>. You need
<b> tags inside of each set of
<p> tags. You are also trying to use tags that just don't exist.
The error result explantions are quite clear. If you can't find someone to do a quick clean up of your code, you might get a book on writing HTML or visit a couple of online tutorials.