Wordpress 101: There's Wordpress.com and Wordpress.org.
Wordpress.com is free, it's hosted by Wordpress and it's relatively limited in terms of what you can do with it. You sign up and get a domain like www.wordpress.com/aceangel
, then you can customize it a bit using the tools they provide.
Wordpress.org is where they distribute the Wordpress files, plug-ins, and themes for those that want to host it on their own web server. It's far more versatile because you can monkey around with the code. The Wordpress files themselves are free, but you would need to pay a hosting company annual fees for a domain and server space. I use GoDaddy, but you can use any host you wish. Domain registration is cheap as chips, and shared server space won't break the bank either. Considering this is your means of getting work, I see it as a sound investment.
Also, you can have multiple installs of Wordpress on your web server. So if you want more than one website or blog, no problem.