WordPress install for secure web domain name

I need the latest wordpress installed and working with my domain name cleverbackpacking.com. It will need to be installed through my local network on my synology nas server. It must be able to work with an ssl certificate. Also i need a dns set up for my dynamic ip address to always be able to point to cleverbackpacking.com. Basically i want to host my secure web site on my own server. I am having problems with the install because the app wordpress install on my synology nas puts a "wordpress" name at the end of my domain name which i dont want. Also since i only have a dynamic ip address by my isp instead of a static ip address i eed to set up a dns which i have not figured out how to do.