Most base-camp sites are delivered using Joomla. This is one of the most popular Content Management Systems on the web today.
Using Joomla means all clients can update their web-site with minimal technical knowledge. This system is flexible and expandable; extra features and content can easily be added to the site as things develop. Clients are given access to the Joomla control panel; from there they can have full access to edit all aspects of the site as they see fit. Of course, I am here to help out at any time if needed.
Joomla is regularly updated to the most recent version.
There is extensive documentation for Joomla. The articles can be a bit technical, but they will contain instructions for anything you want to do.