Show author information on index page in Ghost themes.

gistfile1.handlebars

{{!If page has 'posts' do the following..}}
{{#if posts}}

    {{! Loop over the posts on the page}}
    {{#foreach posts}}
    
        {{! But only look at the first post}}
        {{#if @first}}
        
          {{ Get the author information from the first post}}
          {{author.name}} - {{author.bio}}
          
      {{/if}}
      
    {{/foreach}}

{{/if}}