try this loop thingy - bitches on the run  
Normal:
  {{ links.first }}
{% for item in links %}
  - {{ item }} {% endfor %}
Reverse:
{% for item in links reverse %}
  - 
    {{ loop.last }} {{ loop.counter }} - {{ item }}
  
    {% for shit in links %}
       {{ loop.counter }}
    {% endfor %}
  {% endfor %}
Empty:
{% for ass in asses %}
  {{ ass }}
{% endfor %}
Nested: TODO
Conditions
{% if page.title %}
  this is a page title
{% else %}
  test - else block
{% endif %}
{% block body %}
  {{ page.title }}
   {{ page.description }} 
  {{ page.body }}
  
  parent content
{% endblock %}