Generally, tags are used liberally to indicate the subject matter of a post. For this reason, a list of tags is a great way to help visitors to get around a blog and view a wide array of posts that they're interested in. By default, WordPress lists tags in a cloud, varying the size of each tag according to the number of times it was used. However, this default output can be modified to produce a list that might make more sense to your users.
First, decide where you want to generate a linked list of all of your tags. Open the appropriate template file, and insert the following:
<?php wp_tag_cloud(array( 'format' => 'list', 'unit' => '' )); ?>
Next, open your theme in your browser and take a look at the spot where you inserted the appropriate code. Depending on your site's styles, the output for this function call should look like the example shown in following screenshot: