I want to traslate my domain nataliagomezdelpozuelo.com to another company but I dont know how must I do it. Also I requiere copy the contain of my blog and I dont have the key of FTP and the Data Base
Hi Natalia, I assume you mean you plan to move your blog to a self-hosted WordPress install on a different server.
You will need to purchase web hosting and set up your new WordPress install on another server first. Check out the codex article on wordpress.org about how to install WordPress yourself: Installing WordPress
Once your new installation is set up, you can export your content from your current blog, and import it on your new site. There is no ftp or database access on wordpress.com for this. Instead, you use the instructions here: Export Tool