Glow Blogs now give you access to two different WordPress editors. The classic editor and the newer blocks editor.
At the moment, July 2023, the Classic editor is turned on by default, you can set the blog to use the block editor instead or set it up to have one or other as the default with the choice to switch. More details on the blocks page.
Brief instructions to using the classic editor and the blocks editor follow.
Information on editing menus in a Block theme will follow. If you do not have a block theme (TwentyTwenty-two or TwentyTwenty-three) the classic instructions are the ones to use.