Joomla and WordPress are the 2 most used CMS (Content Management Systems) currently, and they are very different applications.
At The ICT Shak, we always say you should start with the end in mind. Both Joomla and WordPress can be used as a start up website, but consider the added functionality and use of your website as your business grows.
WordPress is a great Blogging platform and is suitable for small minimal page websites with a blog and basic functionality.
Joomla on the other hand comes into it's own when you are planning on building a website with increased functionality and a more complex page structure.