One of the easiest ways to start working with Wordpress is to create one at Wordpress.com
The ups and downs of a wordpress.com blog (they host it) vs a wordpress.org blog (you host it) from their support pages here.
http://en.support.wordpress.com/com-vs-org/
WordPress.com Benefits
It’s free and much easier to setup
Everything is taken care of: setup, upgrades, spam, backups, security, etc
Your blog is on hundreds of servers, so it’s highly unlikely it will go down due to traffic
Your posts are backed up automatically
You get extra traffic from blogs of the day and tags
You can find like-minded bloggers using tag and friend surfer
Your login is secure (SSL) so no one can get into your account if you use wifi
WordPress.com Cons
We provide 100+ themes (and adding more every day) which you can modify and edit the CSS, but you cannot run a custom theme*
You can’t hack the PHP code behind your blog*
You can’t upload plugins
WordPress.org Benefits
Ability to upload themes
Ability to upload plugins
Great community
Complete control to change code if you’re technically minded
WordPress.org Cons
You need a good web host, which generally costs $7-12 a month, or thousands of dollars per month for a high traffic site
Requires more technical knowledge to set up and run
You’re responsible for stopping spam
You have to handle backups
You must upgrade the software manually when a new version comes out
If you get a huge spike in traffic (like Digg or Slashdot) your site will probably go down unless you have a robust hosting setup
As a side note, there is a $15 fee per year to be able to customize CSS for Wordpress.com themes amongst other fees for things such as using a custom domain or going completely ad free.
I decided to go with the .com version at this time. It was quick and easy to select a basic theme, tune it a bit, set a few settings, and off you go.
You can take a look at it here: http://arroshotz.wordpress.com/
In the future as I have more time, I may switch over to my own host and set up a .org install, but for the mean time the .com version will serve me well.