Be consistent with navigation across each page of the site
Link to the homepage from every page
Make navigation sections distinct from content
Make link titles meaningful and understandable
Hightlight the current page if possible
Make in-page links easily recognizable (conventionally,
different color + underline)
Use a bookmark structure on long pages, including a "top" link
Meaningful Links
Rather than "click here" or just "click here," link a short,
descriptive phrase
Provide useful information about the link--make it clear if it is
an external resource, if it is a downloadable file, indicate the
file size and type, etc.
If there is additional information that would be of use to someone
who cannot see the link, use the title
attribute in the link
<a href="xxx" title="this is
the extra info">linked text</a>
Separate adjacent links with a non-link printable character
like | or []