I tried to get this module working but couldn't

=== DESCRIPTION ===
slideshow.module provides basic slideshow capabilities. It transforms
images attached to nodes to a JavaScript enabled slideshow. If the user does not
have JavaScript enabled, it degrades to a "regular" slideshow where the "next"
button points to the next image and a whole new page is loaded.
Any post can contain a slideshow: Enable slideshow for a content type
at Administer >> Content management >> Content types >> [content type]

Could not enable in content types there was nothing about slideshow on this page

tried to use the tag [slideshow] in some posts but nothing happened.

checked permissions and they were OK

I uninstalled the slideshow module and moved on.

I think you need an idiots guide for people like me, deciphering how to use this module using the text above in the readme.txt defeated me, very upsetting.