Well you have to make a decision... do you want to do it yourself or do you want an application to do it all for you (wysiwyg design)? This method in most cases involving frameworks like WordPress, Bootstrap and tons of others may look somewhat appealing on the surface but usually have a train wreck of coding problems underneath.
If you choose to learn how to format etc. then...
1. Uninstall "Blue Griffin" from your system. It's mostly just eye candy anyway.
2. Got to
Arachnophilia and download the web editor. I've been using the 4.0
version since 1998 because it uses a plain text editor. The newer version
is a Java based application and uses a java text editor, but allows you to created
unlimited menus etc.
3. Go to
oswd.org and download as many templates as you like, if you can't find
anything there a simple search for "free html css website templates" will broaden
your horizons.
4. Once you've found everything you're looking for, write up the contents of your pages.
then come back for help formatting and making changes.
Easy peasy right?