To edit a page, you’ll have to know Notion is a WYSIWYG program. That means what you see is what you get. Just highlight and a bar will come up.
This, here, is a block, a Notion term meaning a “block” of text, image, video, embed, any media you can use on the internet. This block, and all blocks, have a six-dotted colon symbol on the side. You can drag it to drag the block, or click it to use settings. You can also create a block by putting in / and filtering stuff in. Notion has an extremely large section on their website on how to use the software, but here’s some basic knowledge:
/text gives you text
dem good codes, yo/h1 gives you a large header
h2 and h3./callout makes a stand-out set of text/page embed a subpage/math makes a $block equation$ as done in $\KaTeX$
/quote makes a quote/table makes a table/div makes a horizontal divider/link makes a link to a page/img makes an image/video makes a video/audio makes an audio embed/code makes a code snippet/file lets you upload files/web makes a web bookmark…and many more.