Where to start with copyediting

Basic copyediting tips at WP:COPYEDIT
Reduced version of the MOS at WP:SMOS
Follow the step-by-step guide from the Guild of Copyeditors

Tips for complying with WP:MOS

Spaces between dates, like "June 2022", should be replaced with   to ensure they're not broken on. eg. March 9 – April 2, 2016 should be March 9 – April 2, 2016.

Check every ampersand. They should usually be avoided except when they fits the style of a proper noun or a specific domain-knowledge convention (MOS:AMP).