How do I add my own links next to "Home" at the top in blogger

 Settings / Layout / Edit HTML

 

Expand Widget Templates

 

Search for (PageList1 could be 2 or 3)

<b:widget id='PageList1' locked='false' title='Pages' type='PageList'>
<b:includable id='main'>
  <b:if cond='data:title'><h2><data:title/></h2></b:if>
  <div class='widget-content'>
    <ul>
      <b:loop values='data:links' var='link'>
        <b:if cond='data:link.isCurrentPage'>
          <li class='selected'><a expr:href='data:link.href'><data:link.title/></a></li>
        <b:else/>
          <li><a expr:href='data:link.href'><data:link.title/></a></li>
        </b:if>
      </b:loop>
               <!--- add external link here remove target=blank to open in same window -->
      <li><a href='URL' target='_blank' title='title of link'>External link</a></li>           <!--- add more external link here -->


    </ul>
    <b:include name='quickedit'/>
  </div>
</b:includable>
</b:widget>