https://local.getflywheel.com/ is probably the easiest to use and get going with right now.
you cad add the following styles, it will probably need some spacing clean up, but this should get you started.
/* the content in this div
appears to be hidden anyway
removing it will help center
everything */
#site-banner-right{
display: none;
}
#masthead .site-branding{
display: block;
}
.top-navigation{
display: block;
text-align: center;
}
the_tags is made for the specific ‘category’ taxonomy on the default ‘post’ post type. the_terms() requires you tell it which taxonomy you’re trying to work with. If you view the category-template.php file, the_tags() is actually built using the get_the_terms() function within it. You could use the setup of the_tags() to make a similar function for your custom post type. Hope this helps.
You could put text-align: center; on your ul.nav-menu class.