This article will walk through the basic steps of creating a page using the block editor
First, from the dashboard, click Pages then Add New:
Once you've entered the Page editor, you can give the page a title, and then click the (+) sign to add a block. When you click the (+) sign, you can scroll through the available blocks, or you can type in the search field to find a specific block. Here is a list of blocks available from WordPress. There are other blocks available through additional plugins such as Gutenberg Ultimate Addon or CoBlocks.
Some of the most common blocks to use are the paragraph block (for basic content and links), the heading block, and the image block.