Hi all,
 Can you post a photo or PDF file on a PM and if so how is it done.(Warning Im old and a Technophobe)

You can add photos to PMs and posts but need to learn how to upload photos to the forum.
It's quite clunky but once you've done it a few times it becomes easy.
Have a look at this helpful guide to uploading pictures.......

https://www.ngaugeforum.co.uk/SMFN/index.php?msg=392705

Since that post some modifications have taken place and you may need to resize your photos. I'd suggest nothing bigger than 500KB should be uploaded.

Note - it helps to have 2 tabs open with the forum on both.