Worked it out. So I thought i would post what i did to make this
so first i made the 'tag' collection:
So then I create a list of tagwords to use - in the blogsite i am trying to create there would be a defined list of tags that all posts could utilise.
So then I added a multiple reference field to the blog post collection
and then I just added the relevant tags to each of the various posts
so that was straightforward.
the bit that didn't go so smoothly was adding this to the blog post page template
but this is basically it ...
Note I added a class to the 'dynamic item' div to style this.
This now works nicely. The tags are linked to a tag template page set up with a filter to just display 'current tag'
hope this is of use to fellow webflowers. Its purely a rough testsite for now: