Want to save information from a form to a file or email it to yourself? You can't use HTML for this, you need a server side languages. There are many such languages that you can use, like PHP, ASP, ASP.net, CGI-Perl, JSP, ColdFusion, ect.
First, find out what your host supports and then you can learn the apporpriate language.
If your just starting out I suggest making your post in the CGI-Perl forum.