If you are using Akeeba Backup for Joomla!, start by reading our Quick Start Guide. It explains everything you need to know about setting up Akeeba Backup for Joomla!, backing up your site and restoring it to the same host or moving from one server to the next (including live to local, local to live and between live hosts). If you are looking for more advanced stuff, take a look at our User's Guide. This is the most comprehensive documentation and covers literally everything. If you prefer video to text, we have an updated Video Tutorials section.
If you are using Akeeba Backup for WordPress or Akeeba Solo, please take a look at the User's Guide.