A quick note about using "MY DRIVE"
My Drive (available from the left menu area in the site editor) is like the file manager of the website and it is like the storage area where one can see and use the files available for use in any web pages created. It is what one uses when uploading or placing images into web pages. Additionally it is also where one uploads and links files for download (e.g. the AGM report, Gift AId forms, etc.).
My Drive also has a section for selecting free images/videos from the internet for use on the site.
Once a file/image is uploaded to the server/site (just drag and drop from your computer's desktop or file manager to My Drive), it is best to never rename that file, most especially if that image might have already been used somewhere on the site (renaming will break the link and not show the image wherever it was used). Only rename (or delete) a file if you are sure it has not been used anywhere on the site and/or is definitely not needed.
When uploading new batches of photos/files, try and find or create a suitable folder and location for them, e.g. if it's for an event like SummerParty2019, then create a folder for that inside the existing "Events" folder, if it's a new third-party logo, there is already a sub-folder in the logos folder especially for them.
In the left hand list of My Drive (which sometimes takes a moment or two to populate), there are alredy many pre-created APCG folder categories within which one should be able to suitably file away sub-folders of new photos. For some of the predefined folder categories there are already folder and sub-folders containing things like Logos, Colleagues or Events. Just try and keep the list tidy and organised with sensible shortish folder names so that in the future it is easy to find particular images and files.
Over time, the number of files and images in a site can become vast, and without a sensible and suitable folder structure with subfolders and categorisation, everything can quickly become a complete mess and because one can't drag and drop folders and files around to different existing folders within My Drive, it becomes very difficult if one ever needs to correct or redo things later, find missing files or even just locate an image for re-use on a new page for example.
PAGES vs BLOGS (Articles)
Pages are standard type web pages with normal site explanations and content, the Blogs (individual Articles) are like individual feature stories or write-ups of events and happenings. These are treated within the site sightly differently to Pages and have their own specific way of displaying their content and a special Blog/Articles page from which one can see all other articles that can also be categorised/ordered. Strangley adding or editing a Blog entry (or Article as they are named for this APCG site) is only found by clicking "SETTINGS" in the main editor's left menu, then you will find BLOG.
Good luck and best wishes in creating and maintaining the APCG website !