Setting up your blog will require a little research and review; you'll need to consider the factors of cost, the time and skills you currently have, and your readiness to learn some new software.  
Almost all blog software is very easy to sue and offers a variety of plug-ins and other resources to make yours unique. You don't necessarily need to hire a professional or specialist to start  publishing; most blogs can be setup with a few hours, and you can learn how to use them as you go.