We can add the custom collection in the admin side and can add many products underneath it
and if we have to show that one in the homepage or in any other page we have to edit the template
Lets create a new collection named Featured and mouse hover on the created collection will indicate the
handle which we can call the custom collection in my case its “featured”

and the code to show the collections is

{% for product in collections.featured.products limit:1 %}
<form action="/cart/add" method="post" class="variants clearfix">   
<a href="{{product.url}}"> 
<div class="img1">
<img src="{{ product.featured_image | product_img_url: 'small' }}">
</div></a>
<div class="side">
<a href="{{product.url}}"> <h1>{{ product.title  | escape }}</h1></a>
<p>{{ product.description | truncatewords:  11 | strip_html }}</p>
{%if product.variants.size > 1 and product.options.size > 1 %}
{% comment %} show drop-down if we've only got 2 or more variants {% endcomment %} 
<select id="product-select" name="id">
{% for variant in product.variants %}
<option value="{{ variant.id }}">{{ variant.title }} - {{ variant.price | money }}</option>
{% endfor %}
</select>
{% endif %}

</div>
<button type="submit">+cart</button>
<div class="price"><span>{{ product.price | money }}</span></div>
</form>{% endfor %}