So I hope I am explaining this correctly.
I have some entries with a tag called 'hidden'. In my blog layout I want to exclude those entries.
I have the following:
{% set tag = craft.tags.name('hidden') %}
{% set hiddenentry = craft.entries.section('blog').relatedTo(tag).find() %}
{% set allentry = craft.entries.section('blog').limit(5).find() %}
{% set unhidden = allentry|without(hiddenentry) %}
{% for entry in unhidden %}
<div class="content">
<article>
<h2><a href="{{ entry.url }}">{{ entry.title }}</a></h2>
<p class="date">Posted on {{ entry.postDate.format('F d, Y') }}</p>
{{ entry.body.getPage(1) }}
{# {{ entry.summary }} #}
<button><a href="{{ entry.url }}">Continue reading</a></button>
</article>
</div>
{% endfor %}