Writing tools, support, and tips.
Usage and Grammar Guides
A usage guide or grammar guide is a book that illustrates how to use English correctly.
The best-known guide deals with the basics of how to write "plain English" -- this is the classic
- The Elements of Style / by William Strunk, Jr. ; with revisions, an introduction, and a chapter on writing by E.B. White
PE1408.S772 2000 -- online here
Here are ONLINE grammar guides, from 2016+