If you want to set up a contact page for people to be able to reach out to you, the simplest way is to set up a simple page like this and list the different ways people can reach out to you.
If you prefer to use a contact form, almost all of the great embedded form services work great with Ghost and are easy to set up (Ghost Integrations).
You can even integrate a contact form using the HTML card, example:
Drop us a line:
Code example:
<h4>Drop us a line:</h4>
<div class="contact-wrap w-100 m-b-lg">
<form action="//formspree.io/youremail@domain.com" id="contact-form" class="contact-form" method="post">
<input class="w-100" type="text" name="username" id="username" title="Name" placeholder="Name" required>
<input type="text" name="email" id="email" title="Email" class="email w-100" placeholder="Email" required>
<textarea class="w-100" rows="5" name="message" id="message" title="Message" placeholder="Message" required></textarea>
<input type="text" name="_gotcha" style="display:none">
<input class="btn btn--primary" type="submit" name="submit" title="Send" id="submit" value="Send">
</form>
</div>