1) Screen Options, Bulk Edit, and Quick Edit
-Screen Options is different on every most wp-admin page and may very likely be hiding that option you know was there the other day.
-Bulk editing can save many many clicks and heartache over processing time too
-Quick edit is much faster when you remember that what you want to change is there
2) Formatting keyboard shortcuts in the editor
3) Getting nasty comments? There’s moderation for that:
4) Static frontpages: some themes need you to set a static homepage, some don’t. Some will have a page template for the front page, some don’t.
6) Customizing a child theme? Not sure how to make a child theme?
7) Boilerplate for making a Gutenberg block:
11) Files too big for media library? Add from server: https://wordpress.org/plugins/add-from-server/
12) Post editor: distraction free writing and 2nd line of toolbar
13) Magic oEmbed, try a facebook post’s or a YouTube video’s URL and watch the embed just appear.
14) Regular Custom Fields are also handy!
15) Database getting big? https://wordpress.org/plugins/wp-sweep/