This seems to be the current training course page – see this on your current website (there are others but much older)
I would suggest that these be added as posts in future and made to show here. Also they all are just posters and there is a big problem with adding posters alone. The text cannot be picked up by Google etc as it is within an image therefore bad for SEO.
Plus posts and pages should contain at least 300 words to be favoured by Google so I would strongly recommend writing out the info from the posters as a proper post – and you can then add the poster as well.
The same applies to events added.
General info re training etc can be added to the top of the post page in an introductory paragraph.