Too Easy. TiddlyWiki.com is the first reference to use but others have provided introductory information
1. The list you need is
<$list filter="[tags[]]">
</$list>
But I expect you don't want system tiddlers, so use
<$list filter="[tags[]!is[system]]">
</$list>
But then you asked for text not links so use
<$list filter="[tags[]!is[system]]">
<$view field=title format="text"/><br>
</$list>
However prefer a list with the tag pill you can click on and see the tiddlers they tag
<$list filter="[tags[]!is[system]]">
{{||$:/core/ui/TagTemplate}}<br>
</$list>
Remove the <br> if you do not want them to a new line break on each
Inside each of the lists the each tag name becomes the "current tiddler"
Because I must work I will leave item 2 for now.
Tony