How do I put a link to my web site in my author page?

The information shown on your author page is set in your personal preferences.  While you are logged in, click on Preferences at the top of the page.  Then select personal preferences. Here you can enter some biographical information about yourself, your geographic location, a link to your web page, and a picture, if you like.  For the link to your web page, simply enter the complete URL, starting with "http://"

If you create articles, it is also very easy to create reference links which are displayed at the end of the article.  Authors can be expected to enter a link to their own site here.  The Welcome page is a good example of a simple article with a number of reference links at the end.