To test your htaccess rewrite rules:
http://htaccess.mwl.be/
Tag: rewrite
URL Rewrite for Beginners
A beginner’s guide to URL rewriting, with plenty of examples.
https://www.addedbytes.com/articles/for-beginners/url-rewriting-for-beginners/
htaccess redirect uppercase urls to lowercase urls
For SEO purposes, it is often necessary to enforce lowercase URIs on your website:
http://brianflove.com/2014/08/11/lowercase-your-uris/
htaccess redirect with query string
Neither Redirect nor RedirectMatch allow you to specify a query string for the redirect source:
https://simonecarletti.com/blog/2009/01/apache-query-string-redirects/