htaccess Guide Sections
htaccess tricks for Webmasters
HTTP Header control with htaccess
mod_php or php as a cgi with htaccess tips, htaccess php tricks
SEO Redirects without mod_rewrite
mod_rewrite tips and tricks with RewriteEngine, RewriteBase, RewriteRule, and RewriteCond
Caching, cache-control, cache, expires, and optimizing htaccess
htaccess from the Apache htaccess tutorial. Check out and use the 404 Error Page WordPress Plugin
MAIN HTACCESS [...]
htaccess and .htaccess rewrite links
Apache Documentation
First, here are several links to the definitive source for Apache 1.3 and Apache 2.0 specifically related to using .htaccess, especially for redirecting URLs and blocking bad bots and spammers.
Apache 1.3
Apache 1.3: Authentication, Authorization, and Access Control
Apache 1.3: Module mod_access
Apache 1.3: Module mod_rewrite URL Rewriting Engine
Apache 1.3: Module mod_setenvif
Apache 1.3: Modules
Apache 1.3 Tutorial: .htaccess [...]