Gutenberg is more than an editor. While the editor is the focus right now, the project will ultimately impact the entire publishing experience including customization (the next focus area).
Gutenberg is new WordPress page/post editing tool which is available in wordpress.org its feeling new experience in WordPress editing, now your post or page looking more professional and beautiful, you to create as rich a post layout as you can imagine. in the classic editor, you are not creating page or post what you imagine, but in new WordPress Gutenberg editor your are free to creating page or post of your imagine
How to add blocks?
Simply click + mark (in round shape) at top left corner then many options are spreading out now you can see many blocks there
1. Add Title and Story in WordPress Gutenberg
In the first block ad title of the post and a short description of your post.
2. Its providing Common Blocks
3. Formatting Tab
Add code inside in a paragraph or anywhere you want, add Custome HTML, more importantly, draw a table inside a post, in the classic editor you must install a plugin for draw a table
4. Next tab taking you into Layout elements
you will be inserted Button, Columns (beta) Read More, page break, Separator, Spacer
Embeds providing lots of features like Youtube, Facebook, Twiter etc. You just click one button and add a URL of your social network
WordPress Gutenberg is installed default by WordPress you are not required to install WordPress Gutenberg plugin in addition just update you old WordPress into newer version then WordPress Gutenberg will installed itself, this is very useful update by WordPress for non-coding web designers like me.