Apache remains the most commonly deployed web server with a reign of 20+ years. Its wide usage contributes to the large number of tutorials and open source modules created by developers for anyone to use.
Apache's development began in mid-1994 as a fork of the NCSA HTTP Server project. By early 1996, Apache overtook the previously dominant but suddenly stagnant NCSA server as NCSA's progress stalled due to signficantly reduced development attention.
The official project documentation page contains a section with How-Tos and Tutorials to handle authentication, security and dynamic content.
Reverse proxies shows
how to set up Apache as a reverse proxy using
Deploy Django on Apache with Virtualenv and mod_wsgi provides instructions for what packages to install to get Apache up and running with mod_wsgi on Ubuntu.
Detecting Bots in Apache & Nginx Logs is a great tutorial for filtering out the significant traffic generated by web crawlers and bots when using Apache HTTP Server logs for traffic analytics.
Monitoring Apache web server performance gives a really nice overview of metrics to watch when you are using Apache as your web server.
Web Performance 101: HTTP Headers covers the gamut of HTTP headers and shows how they can impact performance based on your configuration.
Apache Web Server on Ubuntu 14.04 LTS explains how to install Apache on Ubuntu 14.04, which is still a supported release. Note however, do not install mod_python because it is now insecure and made obsolete by mod_wsgi and WSGI servers.