In reply to Removed User:
Wordpress is about the most used, however if you want to download, and run it on your own pc, you would also need to download, php, mysql, and a vertical server, like apache to develop on your own machine. It's easier to register an account on-line to avoid the duplication and set-up, however if you'd like a better understanding of it, there is value in that method.
edit typo
Post edited at 09:57